From 2ab1bcee40e769268e9d527e59c6dbf20297cc79 Mon Sep 17 00:00:00 2001
From: sthiepaan <info@damianszczypka.com>
Date: Sat, 31 Oct 2020 18:41:51 +0100
Subject: [PATCH 1/5] Add 'independence_year' Property to 'data.json'

---
 data/data.json | 588 ++++++++++++++++++++++++++++++++-----------------
 1 file changed, 392 insertions(+), 196 deletions(-)

diff --git a/data/data.json b/data/data.json
index 0e750f8..531126d 100644
--- a/data/data.json
+++ b/data/data.json
@@ -22,7 +22,8 @@
     "tld": ".af",
     "constitutional_form": "republic",
     "language_codes": ["fa-AF", "ps-AF"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1919
   },
   {
     "country": "albania",
@@ -47,7 +48,8 @@
     "tld": ".al",
     "constitutional_form": "republic",
     "language_codes": ["sq-AL"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1912
   },
   {
     "country": "algeria",
@@ -72,7 +74,8 @@
     "tld": ".dz",
     "constitutional_form": "republic",
     "language_codes": ["ar-DZ", "fr-DZ"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1962
   },
   {
     "country": "andorra",
@@ -97,7 +100,8 @@
     "tld": ".ad",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["ca-AD"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1814
   },
   {
     "country": "angola",
@@ -122,7 +126,8 @@
     "tld": ".ao",
     "constitutional_form": "republic",
     "language_codes": ["pt-AO"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1975
   },
   {
     "country": "antigua & barbuda",
@@ -147,7 +152,8 @@
     "tld": ".ag",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-AG"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1981
   },
   {
     "country": "argentina",
@@ -172,7 +178,8 @@
     "tld": ".ar",
     "constitutional_form": "republic",
     "language_codes": ["es-AR"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1816
   },
   {
     "country": "armenia",
@@ -197,7 +204,8 @@
     "tld": ".am",
     "constitutional_form": "republic",
     "language_codes": ["as-AM"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1991
   },
   {
     "country": "australia",
@@ -222,7 +230,8 @@
     "tld": ".au",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-AU"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 0
   },
   {
     "country": "austria",
@@ -247,7 +256,8 @@
     "tld": ".at",
     "constitutional_form": "republic",
     "language_codes": ["de-AT"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1955
   },
   {
     "country": "azerbaijan",
@@ -272,7 +282,8 @@
     "tld": ".az",
     "constitutional_form": "republic",
     "language_codes": ["az-AZ"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1991
   },
   {
     "country": "the bahamas",
@@ -297,7 +308,8 @@
     "tld": ".bs",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-BS"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1973
   },
   {
     "country": "bahrain",
@@ -322,7 +334,8 @@
     "tld": ".bh",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["ar-BH"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1971
   },
   {
     "country": "bangladesh",
@@ -347,7 +360,8 @@
     "tld": ".bd",
     "constitutional_form": "republic",
     "language_codes": ["bn-BD"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1971
   },
   {
     "country": "barbados",
@@ -372,7 +386,8 @@
     "tld": ".bb",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-BB"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1966
   },
   {
     "country": "belarus",
@@ -397,7 +412,8 @@
     "tld": ".by",
     "constitutional_form": "republic",
     "language_codes": ["be-BY", "ru-BY"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1944
   },
   {
     "country": "belgium",
@@ -422,7 +438,8 @@
     "tld": ".be",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["de-BE", "fr-BE", "nl-BE"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1831
   },
   {
     "country": "belize",
@@ -447,7 +464,8 @@
     "tld": ".bz",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-BZ"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1981
   },
   {
     "country": "benin",
@@ -472,7 +490,8 @@
     "tld": ".bj",
     "constitutional_form": "republic",
     "language_codes": ["fr-BJ"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1960
   },
   {
     "country": "bhutan",
@@ -497,7 +516,8 @@
     "tld": ".bt",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["dz-BT"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1947
   },
   {
     "country": "bolivia",
@@ -522,7 +542,8 @@
     "tld": ".bo",
     "constitutional_form": "republic",
     "language_codes": ["ay-BO", "es-BO", "qu-BO"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1825
   },
   {
     "country": "bosnia and herzegovina",
@@ -547,7 +568,8 @@
     "tld": ".ba",
     "constitutional_form": "republic",
     "language_codes": ["bs-BA", "hr-BA", "sr-BA"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1992
   },
   {
     "country": "botswana",
@@ -572,7 +594,8 @@
     "tld": ".bw",
     "constitutional_form": "republic",
     "language_codes": ["en-BW"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1966
   },
   {
     "country": "brazil",
@@ -597,7 +620,8 @@
     "tld": ".br",
     "constitutional_form": "republic",
     "language_codes": ["pt-BR"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1822
   },
   {
     "country": "brunei",
@@ -622,7 +646,8 @@
     "tld": ".bn",
     "constitutional_form": "absolute monarchy",
     "language_codes": ["ms-BN"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1984
   },
   {
     "country": "bulgaria",
@@ -647,7 +672,8 @@
     "tld": ".bg",
     "constitutional_form": "republic",
     "language_codes": ["bg-BG"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1908
   },
   {
     "country": "burkina faso",
@@ -672,7 +698,8 @@
     "tld": ".bf",
     "constitutional_form": "republic",
     "language_codes": ["fr-BF"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1960
   },
   {
     "country": "burundi",
@@ -697,7 +724,8 @@
     "tld": ".bi",
     "constitutional_form": "republic",
     "language_codes": ["fr-BI", "rn-BI"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1962
   },
   {
     "country": "cambodia",
@@ -722,7 +750,8 @@
     "tld": ".kh",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["km-KH"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1953
   },
   {
     "country": "cameroon",
@@ -747,7 +776,8 @@
     "tld": ".cm",
     "constitutional_form": "republic",
     "language_codes": ["en-CM", "fr-CM"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1960
   },
   {
     "country": "canada",
@@ -772,7 +802,8 @@
     "tld": ".ca",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-CA", "fr-CA"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 0
   },
   {
     "country": "cape verde",
@@ -797,7 +828,8 @@
     "tld": ".cv",
     "constitutional_form": "republic",
     "language_codes": ["pt-CV"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1975
   },
   {
     "country": "central african republic",
@@ -822,7 +854,8 @@
     "tld": ".cf",
     "constitutional_form": "republic",
     "language_codes": ["fr-CF", "sg-CF"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1960
   },
   {
     "country": "chad",
@@ -847,7 +880,8 @@
     "tld": ".td",
     "constitutional_form": "republic",
     "language_codes": ["ar-TD", "fr-TD"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1960
   },
   {
     "country": "chile",
@@ -872,7 +906,8 @@
     "tld": ".cl",
     "constitutional_form": "republic",
     "language_codes": ["es-CL"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1810
   },
   {
     "country": "china",
@@ -897,7 +932,8 @@
     "tld": ".cn",
     "constitutional_form": "republic",
     "language_codes": ["zh-CN"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 0
   },
   {
     "country": "colombia",
@@ -922,7 +958,8 @@
     "tld": ".co",
     "constitutional_form": "republic",
     "language_codes": ["es-CO"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1810
   },
   {
     "country": "comoros",
@@ -947,7 +984,8 @@
     "tld": ".km",
     "constitutional_form": "republic",
     "language_codes": ["ar-KM", "fr-KM"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1975
   },
   {
     "country": "democratic republic of the congo",
@@ -972,7 +1010,8 @@
     "tld": ".cd",
     "constitutional_form": "republic",
     "language_codes": ["fr-CD"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1960
   },
   {
     "country": "republic of the congo (congo-brazzaville)",
@@ -997,7 +1036,8 @@
     "tld": ".cg",
     "constitutional_form": "republic",
     "language_codes": ["fr-CG"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1960
   },
   {
     "country": "costa rica",
@@ -1022,7 +1062,8 @@
     "tld": ".cr",
     "constitutional_form": "republic",
     "language_codes": ["es-CR"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1821
   },
   {
     "country": "cote d'ivoire (ivory coast)",
@@ -1047,7 +1088,8 @@
     "tld": ".ci",
     "constitutional_form": "republic",
     "language_codes": ["fr-CI"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1960
   },
   {
     "country": "croatia",
@@ -1072,7 +1114,8 @@
     "tld": ".hr",
     "constitutional_form": "republic",
     "language_codes": ["hr-HR"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1990
   },
   {
     "country": "cuba",
@@ -1097,7 +1140,8 @@
     "tld": ".cu",
     "constitutional_form": "republic",
     "language_codes": ["es-CU"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1868
   },
   {
     "country": "cyprus",
@@ -1122,7 +1166,8 @@
     "tld": ".cy",
     "constitutional_form": "republic",
     "language_codes": ["el-CY", "tr-CY"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1960
   },
   {
     "country": "czechia",
@@ -1147,7 +1192,8 @@
     "tld": ".cz",
     "constitutional_form": "republic",
     "language_codes": ["cs-CZ"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1918
   },
   {
     "country": "denmark",
@@ -1172,7 +1218,8 @@
     "tld": ".dk",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["da-DK"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 0
   },
   {
     "country": "djibouti",
@@ -1197,7 +1244,8 @@
     "tld": ".dj",
     "constitutional_form": "republic",
     "language_codes": ["ar-DJ", "fr-DJ"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1977
   },
   {
     "country": "dominica",
@@ -1222,7 +1270,8 @@
     "tld": ".dm",
     "constitutional_form": "republic",
     "language_codes": ["en-DM", "fr-DM"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1978
   },
   {
     "country": "dominican republic",
@@ -1247,7 +1296,8 @@
     "tld": ".do",
     "constitutional_form": "republic",
     "language_codes": ["es-DO"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1844
   },
   {
     "country": "east timor (timor-leste)",
@@ -1272,7 +1322,8 @@
     "tld": ".tl",
     "constitutional_form": "republic",
     "language_codes": ["pt-TL"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 2002
   },
   {
     "country": "ecuador",
@@ -1297,7 +1348,8 @@
     "tld": ".ec",
     "constitutional_form": "republic",
     "language_codes": ["es-EC"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1809
   },
   {
     "country": "egypt",
@@ -1322,7 +1374,8 @@
     "tld": ".eg",
     "constitutional_form": "republic",
     "language_codes": ["ar-EG"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 0
   },
   {
     "country": "el salvador",
@@ -1347,7 +1400,8 @@
     "tld": ".sv",
     "constitutional_form": "republic",
     "language_codes": ["es-SV"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1821
   },
   {
     "country": "equitorial guinea",
@@ -1372,7 +1426,8 @@
     "tld": ".gq",
     "constitutional_form": "republic",
     "language_codes": ["es-GQ", "fr-GQ", "pt-GQ"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1968
   },
   {
     "country": "eritrea",
@@ -1397,7 +1452,8 @@
     "tld": ".er",
     "constitutional_form": "republic",
     "language_codes": ["ar-ER", "en-ER", "ti-ER"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1991
   },
   {
     "country": "estonia",
@@ -1422,7 +1478,8 @@
     "tld": ".ee",
     "constitutional_form": "republic",
     "language_codes": ["et-EE"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1918
   },
   {
     "country": "ethiopia",
@@ -1447,7 +1504,8 @@
     "tld": ".et",
     "constitutional_form": "republic",
     "language_codes": ["am-ET"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1991
   },
   {
     "country": "fiji",
@@ -1472,7 +1530,8 @@
     "tld": ".fj",
     "constitutional_form": "republic",
     "language_codes": ["en-FJ", "fj-FJ"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1970
   },
   {
     "country": "finland",
@@ -1497,7 +1556,8 @@
     "tld": ".fi",
     "constitutional_form": "republic",
     "language_codes": ["fi-FI", "sv-FI"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1917
   },
   {
     "country": "france",
@@ -1522,7 +1582,8 @@
     "tld": ".fr",
     "constitutional_form": "republic",
     "language_codes": ["fr-FR"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 0
   },
   {
     "country": "gabon",
@@ -1547,7 +1608,8 @@
     "tld": ".ga",
     "constitutional_form": "republic",
     "language_codes": ["fr-GA"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1960
   },
   {
     "country": "the gambia",
@@ -1572,7 +1634,8 @@
     "tld": ".gm",
     "constitutional_form": "republic",
     "language_codes": ["en-GM"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1965
   },
   {
     "country": "georgia",
@@ -1597,7 +1660,8 @@
     "tld": ".ge",
     "constitutional_form": "republic",
     "language_codes": ["ka-GE"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1918
   },
   {
     "country": "germany",
@@ -1622,7 +1686,8 @@
     "tld": ".de",
     "constitutional_form": "republic",
     "language_codes": ["de-DE"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 0
   },
   {
     "country": "ghana",
@@ -1647,7 +1712,8 @@
     "tld": ".gh",
     "constitutional_form": "republic",
     "language_codes": ["en-GH"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1957
   },
   {
     "country": "greece",
@@ -1672,7 +1738,8 @@
     "tld": ".gr",
     "constitutional_form": "republic",
     "language_codes": ["el-GR"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1821
   },
   {
     "country": "grenada",
@@ -1697,7 +1764,8 @@
     "tld": ".gd",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-GD"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1974
   },
   {
     "country": "guatemala",
@@ -1722,7 +1790,8 @@
     "tld": ".gt",
     "constitutional_form": "republic",
     "language_codes": ["es-GT"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1821
   },
   {
     "country": "guinea",
@@ -1747,7 +1816,8 @@
     "tld": ".gn",
     "constitutional_form": "republic",
     "language_codes": ["fr-GN"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1958
   },
   {
     "country": "guinea-bissau",
@@ -1772,7 +1842,8 @@
     "tld": ".gw",
     "constitutional_form": "republic",
     "language_codes": ["pt-GW"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1973
   },
   {
     "country": "guyana",
@@ -1797,7 +1868,8 @@
     "tld": ".gy",
     "constitutional_form": "republic",
     "language_codes": ["en-GY"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1966
   },
   {
     "country": "haiti",
@@ -1822,7 +1894,8 @@
     "tld": ".ht",
     "constitutional_form": "republic",
     "language_codes": ["fr-HT", "ht-HT"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1804
   },
   {
     "country": "honduras",
@@ -1847,7 +1920,8 @@
     "tld": ".hn",
     "constitutional_form": "republic",
     "language_codes": ["es-HN"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1821
   },
   {
     "country": "hungary",
@@ -1872,7 +1946,8 @@
     "tld": ".hu",
     "constitutional_form": "republic",
     "language_codes": ["hu-HU"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1989
   },
   {
     "country": "iceland",
@@ -1897,7 +1972,8 @@
     "tld": ".is",
     "constitutional_form": "republic",
     "language_codes": ["is-IS"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1944
   },
   {
     "country": "india",
@@ -1922,7 +1998,8 @@
     "tld": ".in",
     "constitutional_form": "republic",
     "language_codes": ["en-IN", "hi-IN"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1947
   },
   {
     "country": "indonesia",
@@ -1947,7 +2024,8 @@
     "tld": ".id",
     "constitutional_form": "republic",
     "language_codes": ["id-ID"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1945
   },
   {
     "country": "iran",
@@ -1972,7 +2050,8 @@
     "tld": ".ir",
     "constitutional_form": "republic",
     "language_codes": ["fa-IR"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1979
   },
   {
     "country": "iraq",
@@ -1997,7 +2076,8 @@
     "tld": ".iq",
     "constitutional_form": "republic",
     "language_codes": ["ar-IK", "ku-IK"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1932
   },
   {
     "country": "republic of ireland",
@@ -2022,7 +2102,8 @@
     "tld": ".ie",
     "constitutional_form": "republic",
     "language_codes": ["en-IE", "ga-IE"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1916
   },
   {
     "country": "israel",
@@ -2047,7 +2128,8 @@
     "tld": ".il",
     "constitutional_form": "republic",
     "language_codes": [ "ar-IL", "he-IL"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1948
   },
   {
     "country": "italy",
@@ -2072,7 +2154,8 @@
     "tld": ".it",
     "constitutional_form": "republic",
     "language_codes": ["it-IT"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 0
   },
   {
     "country": "jamaica",
@@ -2097,7 +2180,8 @@
     "tld": ".jm",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-JM"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1962
   },
   {
     "country": "japan",
@@ -2122,7 +2206,8 @@
     "tld": ".jp",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["ja-JP"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1945
   },
   {
     "country": "jordan",
@@ -2147,7 +2232,8 @@
     "tld": ".jo",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["ar-JO"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1946
   },
   {
     "country": "kazakhstan",
@@ -2172,7 +2258,8 @@
     "tld": ".kz",
     "constitutional_form": "republic",
     "language_codes": ["kk-KZ", "ru-KZ"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1991
   },
   {
     "country": "kenya",
@@ -2197,7 +2284,8 @@
     "tld": ".ke",
     "constitutional_form": "republic",
     "language_codes": ["en-KE", "sw-KE"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1963
   },
   {
     "country": "kiribati",
@@ -2222,7 +2310,8 @@
     "tld": ".ki",
     "constitutional_form": "republic",
     "language_codes": ["en-KI"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1979
   },
   {
     "country": "north korea",
@@ -2247,7 +2336,8 @@
     "tld": ".kp",
     "constitutional_form": "republic",
     "language_codes": ["ko-KP"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1945
   },
   {
     "country": "south korea",
@@ -2272,7 +2362,8 @@
     "tld": ".kr",
     "constitutional_form": "republic",
     "language_codes": ["ko-KR"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1945
   },
   {
     "country": "kosovo",
@@ -2297,7 +2388,8 @@
     "tld": ".rs",
     "constitutional_form": "republic",
     "language_codes": ["sr-XK", "sq-XK"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 2008
   },
   {
     "country": "kuwait",
@@ -2322,7 +2414,8 @@
     "tld": ".kw",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["ar-KW", "en-KW"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1961
   },
   {
     "country": "kyrgyzstan",
@@ -2347,7 +2440,8 @@
     "tld": ".kg",
     "constitutional_form": "republic",
     "language_codes": ["ky-KG", "ru-KG"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1991
   },
   {
     "country": "laos",
@@ -2372,7 +2466,8 @@
     "tld": ".la",
     "constitutional_form": "republic",
     "language_codes": ["lo-LA"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1949
   },
   {
     "country": "latvia",
@@ -2397,7 +2492,8 @@
     "tld": ".lv",
     "constitutional_form": "republic",
     "language_codes": ["lv-LV"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1990
   },
   {
     "country": "lebanon",
@@ -2422,7 +2518,8 @@
     "tld": ".lb",
     "constitutional_form": "republic",
     "language_codes": ["ar-LB", "fr-LB"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1943
   },
   {
     "country": "lesotho",
@@ -2447,7 +2544,8 @@
     "tld": ".ls",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-LS", "st-LS"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1966
   },
   {
     "country": "liberia",
@@ -2472,7 +2570,8 @@
     "tld": ".lr",
     "constitutional_form": "republic",
     "language_codes": ["en-LR"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1847
   },
   {
     "country": "libya",
@@ -2497,7 +2596,8 @@
     "tld": ".ly",
     "constitutional_form": "n/a",
     "language_codes": ["ar-LY"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1951
   },
   {
     "country": "liechtenstein",
@@ -2522,7 +2622,8 @@
     "tld": ".li",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["de-LI"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1866
   },
   {
     "country": "lithuania",
@@ -2547,7 +2648,8 @@
     "tld": ".lt",
     "constitutional_form": "republic",
     "language_codes": ["lt-LT"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1990
   },
   {
     "country": "luxembourg",
@@ -2572,7 +2674,8 @@
     "tld": ".lu",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["de-LU", "fr-LU", "lb-LU"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1958
   },
   {
     "country": "north macedonia (the republic of north macedonia)",
@@ -2597,7 +2700,8 @@
     "tld": ".mk",
     "constitutional_form": "republic",
     "language_codes": ["mk-MK", "sq-MK"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1991
   },
   {
     "country": "madagascar",
@@ -2622,7 +2726,8 @@
     "tld": ".mg",
     "constitutional_form": "republic",
     "language_codes": ["fr-MG", "mg-MG"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1960
   },
   {
     "country": "malawi",
@@ -2647,7 +2752,8 @@
     "tld": ".mw",
     "constitutional_form": "republic",
     "language_codes": ["en-MW", "ny-MW"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1964
   },
   {
     "country": "malaysia",
@@ -2672,7 +2778,8 @@
     "tld": ".my",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["ms-MY"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1957
   },
   {
     "country": "maldives",
@@ -2697,7 +2804,8 @@
     "tld": ".mv",
     "constitutional_form": "republic",
     "language_codes": ["dv-MV"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1965
   },
   {
     "country": "mali",
@@ -2722,7 +2830,8 @@
     "tld": ".ml",
     "constitutional_form": "n/a",
     "language_codes": ["fr-ML"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1960
   },
   {
     "country": "malta",
@@ -2747,7 +2856,8 @@
     "tld": ".mt",
     "constitutional_form": "republic",
     "language_codes": ["en-MT", "mt-MT"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1964
   },
   {
     "country": "marshall islands",
@@ -2772,7 +2882,8 @@
     "tld": ".mh",
     "constitutional_form": "republic",
     "language_codes": ["en-MH", "mh-MH"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1986
   },
   {
     "country": "mauritania",
@@ -2797,7 +2908,8 @@
     "tld": ".mr",
     "constitutional_form": "republic",
     "language_codes": ["ar-MR"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1960
   },
   {
     "country": "mauritius",
@@ -2822,7 +2934,8 @@
     "tld": ".mu",
     "constitutional_form": "republic",
     "language_codes": ["en-MU"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1968
   },
   {
     "country": "mexico",
@@ -2847,7 +2960,8 @@
     "tld": ".mx",
     "constitutional_form": "republic",
     "language_codes": ["es-MX"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1810
   },
   {
     "country": "federal states of micronesia",
@@ -2872,7 +2986,8 @@
     "tld": ".fm",
     "constitutional_form": "republic",
     "language_codes": ["en-FM"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1986
   },
   {
     "country": "moldova",
@@ -2897,7 +3012,8 @@
     "tld": ".md",
     "constitutional_form": "republic",
     "language_codes": ["ro-MD"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1991
   },
   {
     "country": "monaco",
@@ -2922,7 +3038,8 @@
     "tld": ".mc",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["fr-MC"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 0
   },
   {
     "country": "mongolia",
@@ -2947,7 +3064,8 @@
     "tld": ".mn",
     "constitutional_form": "republic",
     "language_codes": ["mn-MN"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1911
   },
   {
     "country": "montenegro",
@@ -2972,7 +3090,8 @@
     "tld": ".me",
     "constitutional_form": "republic",
     "language_codes": ["sr-ME"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 2006
   },
   {
     "country": "morocco",
@@ -2997,7 +3116,8 @@
     "tld": ".ma",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["ar-MA"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1955
   },
   {
     "country": "mozambique",
@@ -3022,7 +3142,8 @@
     "tld": ".mz",
     "constitutional_form": "republic",
     "language_codes": ["pt-MZ"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1975
   },
   {
     "country": "myanmar (burma)",
@@ -3047,7 +3168,8 @@
     "tld": ".mm",
     "constitutional_form": "republic",
     "language_codes": ["my-MM"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1948
   },
   {
     "country": "namibia",
@@ -3072,7 +3194,8 @@
     "tld": ".na",
     "constitutional_form": "republic",
     "language_codes": ["af-NA", "de-NA", "en-NA"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1990
   },
   {
     "country": "nauru",
@@ -3097,7 +3220,8 @@
     "tld": ".nr",
     "constitutional_form": "republic",
     "language_codes": ["en-NR", "na-NR"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1968
   },
   {
     "country": "nepal",
@@ -3122,7 +3246,8 @@
     "tld": ".np",
     "constitutional_form": "republic",
     "language_codes": ["ne-NP"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1946
   },
   {
     "country": "netherlands",
@@ -3147,7 +3272,8 @@
     "tld": ".nl",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["nl-NL"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1581
   },
   {
     "country": "new zealand",
@@ -3172,7 +3298,8 @@
     "tld": ".nz",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-NZ"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 0
   },
   {
     "country": "nicaragua",
@@ -3197,7 +3324,8 @@
     "tld": ".ni",
     "constitutional_form": "republic",
     "language_codes": ["es-NA"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1821
   },
   {
     "country": "niger",
@@ -3222,7 +3350,8 @@
     "tld": ".ne",
     "constitutional_form": "republic",
     "language_codes": ["fr-NE"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1960
   },
   {
     "country": "nigeria",
@@ -3247,7 +3376,8 @@
     "tld": ".ng",
     "constitutional_form": "republic",
     "language_codes": ["en-NG"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1960
   },
   {
     "country": "norway",
@@ -3272,7 +3402,8 @@
     "tld": ".no",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["no-NO"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1905
   },
   {
     "country": "oman",
@@ -3297,7 +3428,8 @@
     "tld": ".om",
     "constitutional_form": "absolute monarchy",
     "language_codes": ["ar-OM"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1650
   },
   {
     "country": "pakistan",
@@ -3322,7 +3454,8 @@
     "tld": ".pk",
     "constitutional_form": "republic",
     "language_codes": [ "en-PK", "ur-PK"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1947
   },
   {
     "country": "palau",
@@ -3347,7 +3480,8 @@
     "tld": ".pw",
     "constitutional_form": "republic",
     "language_codes": ["en-PW"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1994
   },
   {
     "country": "panama",
@@ -3372,7 +3506,8 @@
     "tld": ".pa",
     "constitutional_form": "republic",
     "language_codes": ["es-PA"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1903
   },
   {
     "country": "papa new guinea",
@@ -3397,7 +3532,8 @@
     "tld": ".pg",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-PG"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1975
   },
   {
     "country": "paraguay",
@@ -3422,7 +3558,8 @@
     "tld": ".py",
     "constitutional_form": "republic",
     "language_codes": ["es-PY", "gn-PY"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1811
   },
   {
     "country": "peru",
@@ -3447,7 +3584,8 @@
     "tld": ".pe",
     "constitutional_form": "republic",
     "language_codes": ["es-PE", "qu-PE"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1821
   },
   {
     "country": "philippines",
@@ -3472,7 +3610,8 @@
     "tld": ".ph",
     "constitutional_form": "republic",
     "language_codes": ["en-PH", "tl-PH"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1898
   },
   {
     "country": "poland",
@@ -3497,7 +3636,8 @@
     "tld": ".pl",
     "constitutional_form": "republic",
     "language_codes": ["pl-PL"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1918
   },
   {
     "country": "portugal",
@@ -3522,7 +3662,8 @@
     "tld": ".pt",
     "constitutional_form": "republic",
     "language_codes": ["pt-PT"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1640
   },
   {
     "country": "qatar",
@@ -3547,7 +3688,8 @@
     "tld": ".qa",
     "constitutional_form": "absolute monarchy",
     "language_codes": ["ar-QA"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1971
   },
   {
     "country": "romania",
@@ -3572,7 +3714,8 @@
     "tld": ".ro",
     "constitutional_form": "republic",
     "language_codes": ["ro-RO"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1877
   },
   {
     "country": "russia",
@@ -3597,7 +3740,8 @@
     "tld": ".ru",
     "constitutional_form": "republic",
     "language_codes": ["ru-RU"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 0
   },
   {
     "country": "rwanda",
@@ -3622,7 +3766,8 @@
     "tld": ".rw",
     "constitutional_form": "republic",
     "language_codes": ["en-RW", "fr-RW", "rw-RW"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1962
   },
   {
     "country": "saint kitts and nevis",
@@ -3647,7 +3792,8 @@
     "tld": ".kn",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-KN"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1983
   },
   {
     "country": "saint lucia",
@@ -3672,7 +3818,8 @@
     "tld": ".lc",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-LC", "fr-LC"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1979
   },
   {
     "country": "saint vincent and the grenadines",
@@ -3697,7 +3844,8 @@
     "tld": ".vc",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-VC"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1979
   },
   {
     "country": "samoa",
@@ -3722,7 +3870,8 @@
     "tld": ".ws",
     "constitutional_form": "republic",
     "language_codes": ["en-WS", "sm-WS"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1962
   },
   {
     "country": "san marino",
@@ -3747,7 +3896,8 @@
     "tld": ".sm",
     "constitutional_form": "republic",
     "language_codes": ["it-SM"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 301
   },
   {
     "country": "sao tome and principe",
@@ -3772,7 +3922,8 @@
     "tld": ".st",
     "constitutional_form": "republic",
     "language_codes": ["pt-ST"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1975
   },
   {
     "country": "saudi arabia",
@@ -3797,7 +3948,8 @@
     "tld": ".sa",
     "constitutional_form": "absolute monarchy",
     "language_codes": ["ar-SA"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1932
   },
   {
     "country": "senegal",
@@ -3822,7 +3974,8 @@
     "tld": ".sn",
     "constitutional_form": "republic",
     "language_codes": ["fr-SN"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1960
   },
   {
     "country": "serbia",
@@ -3847,7 +4000,8 @@
     "tld": ".rs",
     "constitutional_form": "republic",
     "language_codes": ["sr-RS"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1804
   },
   {
     "country": "seychelles",
@@ -3872,7 +4026,8 @@
     "tld": ".sc",
     "constitutional_form": "republic",
     "language_codes": ["en-SC", "fr-SC"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1976
   },
   {
     "country": "sierra leone",
@@ -3897,7 +4052,8 @@
     "tld": ".sl",
     "constitutional_form": "republic",
     "language_codes": ["en-SL"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1961
   },
   {
     "country": "singapore",
@@ -3922,7 +4078,8 @@
     "tld": ".sg",
     "constitutional_form": "republic",
     "language_codes": ["en-SG", "ms-SG", "zh-SG"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1965
   },
   {
     "country": "slovakia",
@@ -3947,7 +4104,8 @@
     "tld": ".sk",
     "constitutional_form": "republic",
     "language_codes": ["sk-SK"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1992
   },
   {
     "country": "slovenia",
@@ -3972,7 +4130,8 @@
     "tld": ".si",
     "constitutional_form": "republic",
     "language_codes": ["sl-SI"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1991
   },
   {
     "country": "solomon islands",
@@ -3997,7 +4156,8 @@
     "tld": ".sb",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-SB"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1978
   },
   {
     "country": "somalia",
@@ -4022,7 +4182,8 @@
     "tld": ".so",
     "constitutional_form": "republic",
     "language_codes": ["so-SO"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1960
   },
   {
     "country": "south africa",
@@ -4047,7 +4208,8 @@
     "tld": ".za",
     "constitutional_form": "republic",
     "language_codes": ["af-ZA", "en-ZA", "xh-ZA", "zu-ZA"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1931
   },
   {
     "country": "south sudan (republic of south sudan)",
@@ -4072,7 +4234,8 @@
     "tld": ".ss",
     "constitutional_form": "republic",
     "language_codes": ["ar-SS", "en-SS"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 2011
   },
   {
     "country": "spain",
@@ -4097,7 +4260,8 @@
     "tld": ".es",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["ca-ES", "es-ES"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 0
   },
   {
     "country": "sri lanka",
@@ -4122,7 +4286,8 @@
     "tld": ".lk",
     "constitutional_form": "republic",
     "language_codes": ["si-LK", "ta-LK"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1948
   },
   {
     "country": "sudan (republic of the sudan)",
@@ -4147,7 +4312,8 @@
     "tld": ".sd",
     "constitutional_form": "n/a",
     "language_codes": ["ar-SD", "en-SD"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1956
   },
   {
     "country": "suriname",
@@ -4172,7 +4338,8 @@
     "tld": ".sr",
     "constitutional_form": "republic",
     "language_codes": ["nl-SR"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1975
   },
   {
     "country": "eswatini (swaziland)",
@@ -4197,7 +4364,8 @@
     "tld": ".sz",
     "constitutional_form": "absolute monarchy",
     "language_codes": ["ss-SZ"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1968
   },
   {
     "country": "sweden",
@@ -4222,7 +4390,8 @@
     "tld": ".se",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["sv-SE"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1523
   },
   {
     "country": "switzerland",
@@ -4246,7 +4415,8 @@
     "tld": ".ch",
     "constitutional_form": "republic",
     "language_codes": ["de-CH", "fr-CH", "it-CH", "rm-CH"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1291
   },
   {
     "country": "syria",
@@ -4271,7 +4441,8 @@
     "tld": ".sy",
     "constitutional_form": "republic",
     "language_codes": ["ar-SY"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1946
   },
   {
     "country": "taiwan",
@@ -4296,7 +4467,8 @@
     "tld": ".tw",
     "constitutional_form": "republic",
     "language_codes": ["zh-TW"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1912
   },
   {
     "country": "tajikistan",
@@ -4321,7 +4493,8 @@
     "tld": ".tj",
     "constitutional_form": "republic",
     "language_codes": ["ru-TJ", "tg-TJ"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1991
   },
   {
     "country": "tanzania",
@@ -4346,7 +4519,8 @@
     "tld": ".tz",
     "constitutional_form": "republic",
     "language_codes": ["en-TZ", "sw-TZ"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1961
   },
   {
     "country": "thailand",
@@ -4371,7 +4545,8 @@
     "tld": ".th",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["th-TH"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1767
   },
   {
     "country": "togo",
@@ -4396,7 +4571,8 @@
     "tld": ".tg",
     "constitutional_form": "republic",
     "language_codes": ["fr-TG"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1960
   },
   {
     "country": "tonga",
@@ -4421,7 +4597,8 @@
     "tld": ".to",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-TO", "to-TO"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1970
   },
   {
     "country": "trinidad and tobago",
@@ -4446,7 +4623,8 @@
     "tld": ".tt",
     "constitutional_form": "republic",
     "language_codes": ["en-TT"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1962
   },
   {
     "country": "tunisia",
@@ -4471,7 +4649,8 @@
     "tld": ".tn",
     "constitutional_form": "republic",
     "language_codes": ["ar-TN", "fr-TN"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1956
   },
   {
     "country": "turkey",
@@ -4496,7 +4675,8 @@
     "tld": ".tr",
     "constitutional_form": "republic",
     "language_codes": ["tr-TR"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1923
   },
   {
     "country": "turkmenistan",
@@ -4521,7 +4701,8 @@
     "tld": ".tm",
     "constitutional_form": "republic",
     "language_codes": ["ru-TM", "tk-TM"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1991
   },
   {
     "country": "tuvalu",
@@ -4546,7 +4727,8 @@
     "tld": ".tv",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-TV"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1978
   },
   {
     "country": "uganda",
@@ -4571,7 +4753,8 @@
     "tld": ".ug",
     "constitutional_form": "republic",
     "language_codes": ["en-UG", "sw-UG"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1962
   },
   {
     "country": "ukraine",
@@ -4596,7 +4779,8 @@
     "tld": ".ua",
     "constitutional_form": "republic",
     "language_codes": ["ru-UA", "uk-UA"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1991
   },
   {
     "country": "united arab emirates",
@@ -4621,7 +4805,8 @@
     "tld": ".ae",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["ar-AE"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1971
   },
   {
     "country": "united kingdom",
@@ -4646,7 +4831,8 @@
     "tld": ".gb/.uk",
     "constitutional_form": "constitutional monarchy",
     "language_codes": ["en-GB"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1776
   },
   {
     "country": "united states of america",
@@ -4671,7 +4857,8 @@
     "tld": ".us",
     "constitutional_form": "republic",
     "language_codes": ["en-US", "es-US"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1783
   },
   {
     "country": "uruguay",
@@ -4696,7 +4883,8 @@
     "tld": ".uy",
     "constitutional_form": "republic",
     "language_codes": ["sp-UY"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1825
   },
   {
     "country": "uzbekistan",
@@ -4721,7 +4909,8 @@
     "tld": ".uz",
     "constitutional_form": "republic",
     "language_codes": ["ru-UZ", "uz-UZ"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1991
   },
   {
     "country": "vanuatu",
@@ -4746,7 +4935,8 @@
     "tld": ".vu",
     "constitutional_form": "republic",
     "language_codes": ["bi-VU", "en-VU", "fr-VU"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1980
   },
   {
     "country": "vatican city",
@@ -4771,7 +4961,8 @@
     "tld": ".va",
     "constitutional_form": "absolute monarchy",
     "language_codes": ["it-VA", "la-VA"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1929
   },
   {
     "country": "venezuela",
@@ -4796,7 +4987,8 @@
     "tld": ".ve",
     "constitutional_form": "republic",
     "language_codes": ["es-VE"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1811
   },
   {
     "country": "vietnam",
@@ -4821,7 +5013,8 @@
     "tld": ".vn",
     "constitutional_form": "republic",
     "language_codes": ["vi-VN"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1945
   },
   {
     "country": "yemen",
@@ -4846,7 +5039,8 @@
     "tld": ".ye",
     "constitutional_form": "n/a",
     "language_codes": ["ar-YE"],
-    "is_landlocked": false
+    "is_landlocked": false,
+    "independence_year": 1967
   },
   {
     "country": "zambia",
@@ -4871,7 +5065,8 @@
     "tld": ".zm",
     "constitutional_form": "republic",
     "language_codes": ["en-ZM"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1964
   },
   {
     "country": "zimbabwe",
@@ -4896,6 +5091,7 @@
     "tld": ".zw",
     "constitutional_form": "republic",
     "language_codes": ["en-ZW"],
-    "is_landlocked": true
+    "is_landlocked": true,
+    "independence_year": 1980
   }
 ]

From 755a99ce691c841ecffe5ffb90099029c8fb0b1b Mon Sep 17 00:00:00 2001
From: sthiepaan <info@damianszczypka.com>
Date: Sat, 31 Oct 2020 18:56:28 +0100
Subject: [PATCH 2/5] Fix existing tests

---
 spec/getCountriesSpec.js | 100 +++++++++++++++++++++++++++------------
 1 file changed, 69 insertions(+), 31 deletions(-)

diff --git a/spec/getCountriesSpec.js b/spec/getCountriesSpec.js
index f5d7514..0485292 100644
--- a/spec/getCountriesSpec.js
+++ b/spec/getCountriesSpec.js
@@ -39,7 +39,8 @@ describe("The index", () => {
         "tld": ".af",
         "constitutional_form": "republic",
         "language_codes": ["fa-AF", "ps-AF"],
-        "is_landlocked": true
+        "is_landlocked": true,
+        "independence_year": 1919,
       });
     });
   });
@@ -69,7 +70,8 @@ describe("The index", () => {
         "tld": ".al",
         "constitutional_form": "republic",
         "language_codes": ["sq-AL"],
-        "is_landlocked": false
+        "is_landlocked": false,
+        "independence_year": 1912,
       });
     });
   });
@@ -105,7 +107,8 @@ describe("The index", () => {
         "tld": ".ba",
         "constitutional_form": "republic",
         "language_codes": ["bs-BA", "hr-BA", "sr-BA"],
-        "is_landlocked": false
+        "is_landlocked": false,
+        "independence_year": 1992,
       });
     });
   });
@@ -180,7 +183,7 @@ describe("The index", () => {
       ).toBeTrue();
     });
   });
-  
+
   describe("The getCountriesByAlcoholProhibition", () => {
     const results = countryApi.getCountriesByAlcoholProhibition("nationwide");
     const expectedResults = [
@@ -200,7 +203,8 @@ describe("The index", () => {
         tld: '.af',
         constitutional_form: 'republic',
         language_codes: [ 'fa-AF', 'ps-AF' ],
-        is_landlocked: true
+        is_landlocked: true,
+        independence_year: 1919,
       },
       {
         country: 'brunei',
@@ -218,7 +222,8 @@ describe("The index", () => {
         tld: '.bn',
         constitutional_form: 'absolute monarchy',
         language_codes: [ 'ms-BN' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1984,
       },
       {
         country: 'djibouti',
@@ -236,7 +241,8 @@ describe("The index", () => {
         tld: '.dj',
         constitutional_form: 'republic',
         language_codes: [ 'ar-DJ', 'fr-DJ' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1977,
       },
       {
         country: 'iran',
@@ -254,7 +260,8 @@ describe("The index", () => {
         tld: '.ir',
         constitutional_form: 'republic',
         language_codes: [ 'fa-IR' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1979
       },
       {
         country: 'kuwait',
@@ -272,7 +279,8 @@ describe("The index", () => {
         tld: '.kw',
         constitutional_form: 'constitutional monarchy',
         language_codes: [ 'ar-KW', 'en-KW' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1961,
       },
       {
         country: 'libya',
@@ -290,7 +298,8 @@ describe("The index", () => {
         tld: '.ly',
         constitutional_form: 'n/a',
         language_codes: [ 'ar-LY' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1951,
       },
       {
         country: 'mauritania',
@@ -308,7 +317,8 @@ describe("The index", () => {
         tld: '.mr',
         constitutional_form: 'republic',
         language_codes: [ 'ar-MR' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1960,
       },
       {
         country: 'saudi arabia',
@@ -326,7 +336,8 @@ describe("The index", () => {
         tld: '.sa',
         constitutional_form: 'absolute monarchy',
         language_codes: [ 'ar-SA' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1932,
       },
       {
         country: 'somalia',
@@ -344,9 +355,11 @@ describe("The index", () => {
         tld: '.so',
         constitutional_form: 'republic',
         language_codes: [ 'so-SO' ],
-        is_landlocked: false
-      }    
+        is_landlocked: false,
+        independence_year: 1960,
+      }
     ];
+
     it("returns the details of all countries where nationwide alcohol prohibition is applicable", () => {
        expect(results).toEqual(expectedResults); 
     });
@@ -354,6 +367,7 @@ describe("The index", () => {
       expect(countryApi.getCountriesByAlcoholProhibition("none").length).toEqual(176);
     });
   });
+
   describe("The getCountryDetailsByCapital when given a capital", () => {
     it("returns the details of countries with that capital", () => {
       expect(countryApi.getCountryDetailsByCapital("kabul")[0]).toEqual({
@@ -379,7 +393,8 @@ describe("The index", () => {
         "tld": ".af",
         "constitutional_form": "republic",
         "language_codes": ["fa-AF", "ps-AF"],
-        "is_landlocked": true
+        "is_landlocked": true,
+        "independence_year": 1919,
       });
     });
   });
@@ -409,7 +424,8 @@ describe("The index", () => {
         "tld": ".al",
         "constitutional_form": "republic",
         "language_codes": ["sq-AL"],
-        "is_landlocked": false
+        "is_landlocked": false,
+        "independence_year": 1912,
       });
     });
   });
@@ -445,7 +461,8 @@ describe("The index", () => {
         "tld": ".ba",
         "constitutional_form": "republic",
         "language_codes": ["bs-BA", "hr-BA", "sr-BA"],
-        "is_landlocked": false
+        "is_landlocked": false,
+        "independence_year": 1992,
       });
     });
   });
@@ -543,7 +560,8 @@ describe("The index", () => {
         tld: '.au',
         constitutional_form: 'constitutional monarchy',
         language_codes: [ 'en-AU' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 0,
       },
       {
         country: 'fiji',
@@ -561,7 +579,8 @@ describe("The index", () => {
         tld: '.fj',
         constitutional_form: 'republic',
         language_codes: [ 'en-FJ', 'fj-FJ' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1970,
       },
       {
         country: 'kiribati',
@@ -579,7 +598,8 @@ describe("The index", () => {
         tld: '.ki',
         constitutional_form: 'republic',
         language_codes: [ 'en-KI' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1979,
       },
       {
         country: 'marshall islands',
@@ -597,7 +617,8 @@ describe("The index", () => {
         tld: '.mh',
         constitutional_form: 'republic',
         language_codes: [ 'en-MH', 'mh-MH' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1986,
       },
       {
         country: 'federal states of micronesia',
@@ -615,7 +636,8 @@ describe("The index", () => {
         tld: '.fm',
         constitutional_form: 'republic',
         language_codes: [ 'en-FM' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1986,
       },
       {
         country: 'nauru',
@@ -633,7 +655,8 @@ describe("The index", () => {
         tld: '.nr',
         constitutional_form: 'republic',
         language_codes: [ 'en-NR', 'na-NR' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1968,
       },
       {
         country: 'new zealand',
@@ -651,7 +674,8 @@ describe("The index", () => {
         tld: '.nz',
         constitutional_form: 'constitutional monarchy',
         language_codes: [ 'en-NZ' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 0,
       },
       {
         country: 'palau',
@@ -669,7 +693,8 @@ describe("The index", () => {
         tld: '.pw',
         constitutional_form: 'republic',
         language_codes: [ 'en-PW' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1994,
       },
       {
         country: 'papa new guinea',
@@ -687,7 +712,8 @@ describe("The index", () => {
         tld: '.pg',
         constitutional_form: 'constitutional monarchy',
         language_codes: [ 'en-PG' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1975,
       },
       {
         country: 'samoa',
@@ -705,7 +731,8 @@ describe("The index", () => {
         tld: '.ws',
         constitutional_form: 'republic',
         language_codes: [ 'en-WS', 'sm-WS' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1962,
       },
       {
         country: 'solomon islands',
@@ -723,7 +750,8 @@ describe("The index", () => {
         tld: '.sb',
         constitutional_form: 'constitutional monarchy',
         language_codes: [ 'en-SB' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1978,
       },
       {
         country: 'tonga',
@@ -741,7 +769,8 @@ describe("The index", () => {
         tld: '.to',
         constitutional_form: 'constitutional monarchy',
         language_codes: [ 'en-TO', 'to-TO' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1970,
       },
       {
         country: 'tuvalu',
@@ -759,7 +788,8 @@ describe("The index", () => {
         tld: '.tv',
         constitutional_form: 'constitutional monarchy',
         language_codes: [ 'en-TV' ],
-        is_landlocked: false
+        is_landlocked: false,
+        independence_year: 1978,
       },
       {
         country: 'vanuatu',
@@ -777,7 +807,8 @@ describe("The index", () => {
         tld: '.vu',
         constitutional_form: 'republic',
         language_codes: [ 'bi-VU', 'en-VU', 'fr-VU' ],
-        is_landlocked: false    
+        is_landlocked: false,
+        independence_year: 1980,
       },
     ];
     const asiaCountries = countryApi.getCountriesByContinent("as");
@@ -826,6 +857,7 @@ describe("The index", () => {
       constitutional_form: "republic",
       language_codes: ["pl-PL"],
       is_landlocked: false,
+      independence_year: 1918,
     };
 
     it("returns correct country using numeric ISO", () => {
@@ -865,6 +897,7 @@ describe("The index", () => {
       constitutional_form: "republic",
       language_codes: ["pl-PL"],
       is_landlocked: false,
+      independence_year: 1918,
     };
     const dotRSCountries = countryApi.getCountriesByTLD(".RS");
     const expectedDotRSCountries = [
@@ -892,6 +925,7 @@ describe("The index", () => {
         constitutional_form: "republic",
         language_codes: ["sr-XK", "sq-XK"],
         is_landlocked: true,
+        independence_year: 2008,
       },
       {
         country: "serbia",
@@ -917,6 +951,7 @@ describe("The index", () => {
         constitutional_form: "republic",
         language_codes: ["sr-RS"],
         is_landlocked: true,
+        independence_year: 1804,
       },
     ];
     const [dotUKCountry] = countryApi.getCountriesByTLD(".uk");
@@ -944,6 +979,7 @@ describe("The index", () => {
       constitutional_form: "constitutional monarchy",
       language_codes: ["en-GB"],
       is_landlocked: false,
+      independence_year: 1776,
     };
     const [dotGBCountry] = countryApi.getCountriesByTLD(".GB");
 
@@ -1021,6 +1057,7 @@ describe("The index", () => {
           "mi2": 252072,
         },
         is_landlocked: true,
+        independence_year: 1919,
       });
     });
 
@@ -1049,6 +1086,7 @@ describe("The index", () => {
         constitutional_form: "republic",
         language_codes: ["sq-AL"],
         is_landlocked: false,
+        independence_year: 1912,
       });
     });
   });

From 1aecf56dd06b7098ba4db9dc330f97bf2dac3e79 Mon Sep 17 00:00:00 2001
From: sthiepaan <info@damianszczypka.com>
Date: Sat, 31 Oct 2020 19:47:53 +0100
Subject: [PATCH 3/5] Add 'getCountriesByIndependenceYearRange' Method

---
 index.js | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index a01efa2..611787e 100644
--- a/index.js
+++ b/index.js
@@ -231,7 +231,7 @@ const getCountriesByConstitutionalForm = (constitutionalFormName) => {
   return result;
 }
 
-/** 
+/**
  * Returns an array of objects containing all countries, each containing `country`, `capital`,
  * `currency`, `native_language`, `famous_for`, `phone_code`, `flag` and `drive_direction` filtered by `is_landlocked`
  * @param { Boolean } isLandLocked  Country that is surrounded by one or more countries
@@ -241,6 +241,18 @@ const getCountriesByLandLock = (isLandLocked) => {
   return data.filter( country => country.is_landlocked === isLandLocked);
 };
 
+/**
+ * Get list of countries that gained independence in range of years
+ * @param {Number} from - starting year
+ * @param {Number} [to] - ending year or current year (if not passed)
+ * @returns {Array}
+ */
+const getCountriesByIndependenceYearRange = (from, to) => {
+  to = to ? to : new Date().getFullYear();
+
+  return data.filter(({ independence_year: year }) => (year >= from && year <= to));
+};
+
 module.exports = {
   getRandomCountry,
   getNRandomCountriesData,
@@ -257,4 +269,5 @@ module.exports = {
   getCountriesByTLD,
   getCountriesByConstitutionalForm,
   getCountriesByLandLock,
+  getCountriesByIndependenceYearRange,
 };

From 78b306e0c128aba0eaeee6d58ea22bec8ebc03a3 Mon Sep 17 00:00:00 2001
From: sthiepaan <info@damianszczypka.com>
Date: Sat, 31 Oct 2020 19:48:26 +0100
Subject: [PATCH 4/5] Add 'getCountriesByIndependenceYearRange' Tests

---
 spec/getCountriesSpec.js | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/spec/getCountriesSpec.js b/spec/getCountriesSpec.js
index 0485292..2a5e5ea 100644
--- a/spec/getCountriesSpec.js
+++ b/spec/getCountriesSpec.js
@@ -1090,4 +1090,33 @@ describe("The index", () => {
       });
     });
   });
+
+  describe("The getCountriesByIndependenceYearRange", () => {
+    const fifteenthCentury = countryApi.getCountriesByIndependenceYearRange(1501, 1600);
+    const nlCountry = countryApi.getCountriesByIndependenceYearRange(1581, 1600);
+    const seCountry = countryApi.getCountriesByIndependenceYearRange(1501, 1523);
+    const twentyFirstCentury = countryApi.getCountriesByIndependenceYearRange(2000);
+    const expectedNLCountry = countryApi.getCountryDetailsByName('netherlands');
+    const expectedSECountry = countryApi.getCountryDetailsByName('sweden');
+    const expectedFifteenthCenturyResult = [...expectedNLCountry, ...expectedSECountry];
+    const expectedTwentyFirstCentury = [
+      ...countryApi.getCountryDetailsByName('east timor'),
+      ...countryApi.getCountryDetailsByName('kosovo'),
+      ...countryApi.getCountryDetailsByName('montenegro'),
+      ...countryApi.getCountryDetailsByName('south sudan'),
+    ];
+
+    it("returns correct countries using both 'from' and 'to' parameters", () => {
+      expect(fifteenthCentury).toEqual(expectedFifteenthCenturyResult);
+    });
+    it("returns correct countries using year of independence day as 'from' parameter", () => {
+      expect(nlCountry).toEqual(expectedNLCountry);
+    });
+    it("returns correct countries using year of independence day as 'to' parameter", () => {
+      expect(seCountry).toEqual(expectedSECountry);
+    });
+    it("returns correct list of countries using only 'from' parameter", () => {
+      expect(twentyFirstCentury).toEqual(expectedTwentyFirstCentury);
+    });
+  })
 });

From 9863d1f27120d4d8c9b965def1f58e6b06e54c77 Mon Sep 17 00:00:00 2001
From: sthiepaan <info@damianszczypka.com>
Date: Sat, 31 Oct 2020 20:06:46 +0100
Subject: [PATCH 5/5] Document 'getCountriesByIndependenceYearRange' Method

---
 README.md | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 578c8ab..5e80690 100644
--- a/README.md
+++ b/README.md
@@ -54,6 +54,7 @@ Currently available data for each country is:
 - **constitutional_form** - official political system
 - **language_codes** - list of langauge codes (combination of _ISO 639-1_ and _ISO 3166-1 alpha-2_)
 - **is_landlocked** - information whether country is surrounded by one or more countries
+- **independence_year** - year when country gained independence
 
 You can check all changes in the project at [releases page on Github][URL_GH_RELEASES]
 or in [changelog][DOC_CHANGELOG].
@@ -140,6 +141,7 @@ Type definition of each `Country {Object}`:
  * @property {String} constitutional_form - Name of official political system
  * @property {String[]} language_codes - Array of language codes
  * @property {Boolean} is_landlocked - Is country surrounded by one or more countries
+ * @property {Number} independence_year - Country independence year
  */
 ```
 
@@ -168,7 +170,8 @@ Sample `Country {Object}`:
 	tld: '.pl',
 	constitutional_form: 'republic',
 	language_codes: ['pl-PL'],
-	is_landlocked: false
+	is_landlocked: false,
+	independence_year: 1918,
 }
 ```
 
@@ -327,6 +330,17 @@ wcc.getCountriesByLandLock(isLandLocked)
 // Example: wcc.getCountriesByLandLock(true)
 ```
 
+```js
+/**
+ * Get list of countries that gained independence in range of years
+ * @param {Number} from - starting year
+ * @param {Number} [to] - ending year or current year (if not passed)
+ * @returns {Country[]}
+ */
+wcc.getCountriesByIndependenceYearRange(from, to)
+// Example: wcc.getCountriesByIndependenceYearRange(1400, 1950)
+```
+
 ❗️ All params are **NOT** case sensitive so no matter how argument looks,
 the response will remain the same.