Timeline of national independence
This list includes currently extant sovereign states (list) and states with limited recognition that have declared independence from a predecessor state or an occupying power. Various states have never declared independence throughout their formations and are therefore not included in the main list on this page. This includes states formed through the unification of multiple independent entities (such as the United Kingdom and Tanzania) as well as those that once declared independence but whose most recent establishment occurred through other means (such as Haiti, which declared independence from France in 1804, split into two states in 1806, and reunified in 1820). These countries are given on a separate list below. The list does not include duplicated entries for states that have declared independence multiple times, only using the most recent one. Subnational entities are usually not included in the list. Some of these dates of independence might be disputed, as many of them aren't the official independence days nationally recognized as such.
List
Before 19th century
| Date | Previous entity | Newly independent entity | Event |
|---|---|---|---|
| September 3, 301 | Roman Empire | San Marino | Traditionally given date. |
| August 10, 843 | Carolingian Empire | France | Treaty of Verdun, splitting the Frankish Empire into three states, one of which became France. |
| June 6, 1523 | Kalmar Union | Sweden | Election of King Gustav Vasa as King of Sweden, marking a definite secession from the Kalmar Union. Initial establishment in 970. |
| December 1, 1640 | Spain | Portugal | Start of the Portuguese Restoration War that reestablished Portugal as a sovereign state, thus ending the Iberian Union with Spain. Initial establishment in 868. |
| February 8, 1649 | Holy Roman Empire | Switzerland | Separated from Imperial sovereignty by the Peace of Westphalia. Initial establishment in 1291. |
| September 3, 1783 | Great Britain | United States | Treaty of Paris is signed. Initial independence in 1776. |
19th century to World War I
| Date | Previous entity | Newly independent entity | Event |
|---|---|---|---|
| May 14, 1811 | Spain | Paraguay | Independence not formally declared until 1842. |
| November 4, 1813 | Confederation of the Rhine | Liechtenstein | Confederation of the Rhine dissolved. Initial establishment in 1719 within the Holy Roman Empire. |
| November 20, 1813 | France | Netherlands | Independence restored after French rule. Initial independence from Spain in 1579 during the Eighty Years' War. |
| May 30, 1814 | Andorra | Independence restored after French rule. Initial independence from Urgell in 1278. | |
| Monaco | Independence restored after French rule. Initial independence from Genoa in 1297, interrupted by multiple Genoese occupations. | ||
| July 9, 1816 | Spain | Argentina | Originally named United Provinces of the Río de la Plata until the signing of the Federal Pact in 1831. Initial independence in 1810. |
| February 12, 1818 | Chile | Independence restored after Spanish reconquest, initial independence in 1810. | |
| September 28, 1821 | Mexico | Unrecognized by Spain until 1836 with the signing of the Santa María–Calatrava Treaty. | |
| January 4, 1822 | Ottoman Empire | Greece | International recognition achieved in 1830. |
| September 7, 1822 | Portugal | Brazil | Unrecognized by Portugal until 1825. |
| October 4, 1828 | Brazil | Uruguay | Independence established by treaty as a buffer between Brazil and Argentina, which both previously claimed the region. |
| Netherlands | Belgium | Unrecognized by Netherlands until 1839. | |
| November 19, 1832 | Gran Colombia | Colombia | Dissolution of Gran Colombia. Originally named Republic of New Granada until the signing of the Constitution of Rionegro in 1863. |
| Ecuador | Dissolution of Gran Colombia. | ||
| Venezuela | Dissolution of Gran Colombia. Restoration of Independence, initial establishment in 1811. | ||
| November 15, 1838 | Central America | Costa Rica | Originally the Free State of Costa Rica, it would become the Republic of Costa Rica in 1847. |
| June 19, 1839 | Belgium | Luxembourg | Grand Duchy re-established by the Treaty of London in personal union with the Netherlands (until 1890). |
| August 25, 1839 | Peru-Bolivia Confederation | Bolivia | Restoration of Independence, initial establishment in 1825. |
| Peru | Restoration of Independence, initial establishment in 1821. | ||
| July 26, 1847 | United States | Liberia | Unrecognized by United States until 1862. |
| May 1, 1865 | Spain | Dominican Republic | Independence restored after period of Spanish rule. Initial independence declared from Spain in 1821, and later from Haiti in 1844. |
| July 1, 1867 | United Kingdom | Canada | Britain continued to exercise some level of control until the Statute of Westminster. In personal union with the UK and many other countries. |
| March 17, 1878 | Ottoman Empire | Bulgaria | Under Ottoman vassalage until 1908. Restoration of independence after Ottoman rule, initial establishment in 681. |
| November 29, 1898 | Central America | Nicaragua | Independence restored after the dissolution of the Greater Republic of Central America, initial independence in 1838. |
| January 1, 1901 | United Kingdom | Australia | Britain continued to exercise some level of control until the Statute of Westminster. In personal union with the UK and many other countries. |
| May 20, 1902 | United States | Cuba | United States retained Isla de Pinos until 1925. Guantanamo Bay was leased to the United States in 1903 and has remained under American control into the present. |
| November 4, 1903 | Colombia | Panama | Unrecognized by Colombia until 1922. |
| June 7, 1905 | Sweden | Norway | Independence restored after Danish and Swedish rule. Initial establishment in 872. |
| September 26, 1907 | United Kingdom | New Zealand | Britain continued to exercise some level of control until the Statute of Westminster. In personal union with the UK and many other countries. |
| May 31, 1910 | South Africa | Britain continued to exercise some level of control until the Statute of Westminster. In personal union with the UK and many other countries until 1961. | |
| December 6, 1917 | Russia | Finland | Sovereignty secured in 1918 with the defeat of communist insurgents. |
| October 17, 1918 | Austria-Hungary | Hungary | Independence restored with the dissolution of Austria-Hungary. Initial establishment in 895. Stayed in personal union with Austria until November 16. |
Interwar period to World War II
| Date | Previous entity | Newly independent entity | Event |
|---|---|---|---|
| December 1, 1918 | Denmark | Iceland | In personal union with Denmark until 1944. Initial establishment in 930. |
| August 19, 1919 | United Kingdom | Afghanistan | Anglo-Afghan Treaty of 1919 signed between the United Kingdom and Afghanistan during the Third Anglo-Afghan War, ending 40 years of British protectorate in the country. Initial establishment in 1747. |
| February 15, 1921 | Republic of China | Mongolia | Independence restored after Chinese occupation. Initial establishment of first Mongolian state in 1203. |
| January 14, 1922 | Central America | El Salvador | Independence restored after brief attempt at reunifying Central America, initial independence in 1841. |
| Guatemala | Independence restored after brief attempt at reunifying Central America, initial independence in 1839. | ||
| Honduras | Independence restored after brief attempt at reunifying Central America, initial independence in 1838. | ||
| March 15, 1922 | United Kingdom | Egypt | Independence restored after a period of British rule. Initial establishment around 3150 BC. Egypt would remain under strong British influence until 1952, when the monarchy was abolished and replaced by a republic. |
| December 6, 1922 | Ireland | Independence restored after direct British rule. In personal union with Britain until 1937. Initial establishment of first state called Ireland in 1177. | |
| June 7, 1929 | Italy | Vatican City[1] | Established by the Lateran Treaty. Initial establishment in 756. |
| October 3, 1932 | United Kingdom | Iraq | Formerly a League of Nations mandate. |
| May 5, 1941 | Italy | Ethiopia | Independence restored after Italian occupation. Initial establishment in 1270. |
| December 22, 1943 | France | Lebanon | Formerly a League of Nations mandate. |
| Syria | Formerly a League of Nations mandate. Unrecognized by France until 1946. | ||
| July 22, 1944 | Germany | Poland | Independence restored after German occupation. Initial establishment in 960. |
| October 22, 1944 | Albania | Independence restored after German occupation. Initial establishment in 1190. | |
| April 27, 1945 | Austria | Independence restored after German occupation. Initial establishment in 970 within the Holy Roman Empire. | |
| August 15, 1945 | Japan | North Korea | Independence restored after Japanese occupation as the Democratic People's Republic of Korea/Chosŏn. The country was partitioned along the 38th parallel by the Allied powers. Created in 1948 from the Soviet occupation zone in the north of the peninsula. Initial establishment in 2333 BC. |
| South Korea | Independence restored after Japanese occupation as the Republic of Korea/Hanguk. The country was partitioned along the 38th parallel by the Allied powers. Created in 1948 from the American occupation zone in the south of the peninsula. Initial establishment in 2333 BC. | ||
| August 17, 1945 | Netherlands | Indonesia | Unrecognized by Netherlands until 1949. In personal union with the Netherlands until 1956. |
Cold War
| Date | Previous entity | Newly independent entity | Event |
|---|---|---|---|
| March 2, 1946 | United Kingdom and Soviet Union | Iran | Withdrawal of British troops from Iran following invasion and occupation in 1941, although Soviet troops wouldn’t withdraw until May 1946. Initial establishment in 678 BC. The monarchy would be overthrown in 1979 and replaced by the Islamic Republic of Iran. |
| June 17, 1946 | United Kingdom | Jordan | Previously a League of Nations Mandate. |
| July 4, 1946 | United States | Philippines | Restoration of Independence after American rule. Initial independence in 1897. |
| August 14, 1947 | United Kingdom | Pakistan | In personal union with the UK and many other countries until 1956. |
| August 15, 1947 | India | In personal union with the UK and many other countries until 1950. | |
| January 4, 1948 | Myanmar | Independence restored after British rule. Originally named Burma until 1989. Initial establishment in 849. | |
| February 4, 1948 | Sri Lanka | Originally named Ceylon until 1972. In personal union with the UK and many other countries until 1972. | |
| May 14, 1948 | Israel | Previously a League of Nations mandate. Partially unrecognized. Initial establishment in 930 BC. | |
| October 1, 1948 | Palestine[1] | Previously a League of Nations mandate although it existed as a client state of Egypt from 1948 to 1959. Partially unrecognized. Modern Palestinian state was proclaimed in 1988 and claims limited control over the territory that is under Israeli occupation since 1967 under the Oslo Accords. Initial establishment in 1550 BC. | |
| October 1, 1949 | Republic of China | China | Independence declared from the Republic of China, whose government was relocated and territory reduced to Taiwan and surrounding islands. Tibet would be annexed in 1951. Initial establishment in 2070 BC. |
| December 24, 1951 | United Kingdom and France | Libya | Created by merging French and British-occupied areas in Libya with the independent Emirate of Cyrenaica. Initial establishment in 1551. |
| October 22, 1953 | France | Laos | In 1975, the Pathet Lao, a left-wing revolutionary force in the Kingdom of Laos, takeover the country and abolish the monarchy, becoming a communist state, the Lao People's Democratic Republic. Initial establishment in 1353. |
| November 9, 1953 | France | Cambodia | Independence restored after French protectorate status. Initial establishment in 802. |
| January 1, 1956 | United Kingdom and Egypt | Sudan | Independence granted during the First Sudanese Civil War. Initial establishment in 1885. |
| March 20, 1956 | France | Tunisia | Independence restored after period as a French protectorate. Initial establishment in 1705. |
| March 6, 1957 | United Kingdom | Ghana | In personal union with the UK and many other countries until 1960. |
| August 14, 1957 | France | Morocco | Independence restored after French protectorate. Initial establishment in 788. |
| October 2, 1958 | France | Guinea | Joined the UN on December 12. |
| January 1, 1960 | Cameroon | Joined the UN on September 20. | |
| April 27, 1960 | Togo | Joined the UN on September 20. | |
| June 20, 1960 | Mali | Senegal declares independence on August 20. | |
| June 26, 1960 | Madagascar | Independence restored after French rule, initial establishment as Kingdom of Madagascar in 1817, a successor to the earlier Merina Kingdom. | |
| June 30, 1960 | Belgium | Congo-Leopoldville | Named Zaire from 1971-1997. Now known as Democratic Republic of the Congo or Congo-Kinshasa. |
| July 1, 1960 | Italy | Somalia | Somaliland secedes in 1991. Puntland secedes in 2024. |
| July 31, 1960 | France | Benin | Originally named Dahomey until 1975. |
| August 5, 1960 | Burkina Faso | Originally named Upper Volta until 1984. | |
| August 7, 1960 | Côte d'Ivoire | Originally named Ivory Coast until 1986. | |
| August 8, 1960 | Niger | Joined the UN on September 20. | |
| August 11, 1960 | Chad | Joined the UN on September 20. | |
| August 13, 1960 | Central African Republic | Central African Empire from 1976-1979. | |
| August 15, 1960 | Congo-Brazzaville | Also known as the Republic of the Congo or the Congo Republic. | |
| August 16, 1960 | United Kingdom | Cyprus | Initial establishment in 1192. |
| August 17, 1960 | France | Gabon | Joined the UN on September 20. |
| October 1, 1960 | United Kingdom | Nigeria | In personal union with the UK and many other countries until 1963. |
| November 28, 1960 | France | Mauritania | Joined the UN in 1961. |
| April 27, 1961 | United Kingdom | Sierra Leone | In personal union with the UK and many other countries until 1971. |
| June 19, 1961 | United Kingdom | Kuwait | Independence restored after period of British protectorate. Initial independence in 1752. |
| January 1, 1962 | New Zealand | Samoa | Independence restored after German and New Zealand rule. Initial establishment in 1300. |
| July 1, 1962 | Belgium | Burundi | Independence restored after German and Belgian protectorate. Initial establishment in 1680. |
| Rwanda | Independence restored after German and Belgian protectorate. Initial establishment in the 12th century. | ||
| July 5, 1962 | France | Algeria | Independence restored after French colonial rule. Initial establishment in 1516. |
| August 6, 1962 | United Kingdom | Jamaica | In personal union with the UK and many other countries. |
| August 31, 1962 | Trinidad and Tobago | In personal union with the UK and many other countries until 1976. | |
| October 9, 1962 | Uganda | In personal union with the UK and many other countries until 1963. | |
| November 12, 1963 | Kenya | In personal union with the UK and many other countries until 1964. | |
| July 6, 1964 | Malawi | In personal union with the UK and many other countries until 1966. | |
| September 21, 1964 | Malta | Independence restored after French and British rule. Initial independence in 1520. In personal union with the UK and many other countries until 1974. | |
| October 24, 1964 | Zambia | Joined the UN on December 1. | |
| July 26, 1965 | Maldives | Independence restored after British protectorate. Initial establishment before 1117. | |
| August 4, 1965 | New Zealand | Cook Islands[2] | Partially unrecognized. In personal union with the UK and many other countries. In free association with New Zealand. |
| August 9, 1965 | Malaysia | Singapore | Forcibly expelled from Malaysia. Initial establishment in 1299. |
| May 26, 1966 | United Kingdom | Guyana | In personal union with the UK and many other countries until 1970. |
| September 30, 1966 | Botswana | Joined the UN on October 17. | |
| October 4, 1966 | Lesotho | Independence restored after period of British protectorate. Initial establishment in 1822. | |
| November 30, 1966 | Barbados | In personal union with the UK and many other countries until 2021. | |
| January 31, 1968 | Australia | Nauru | Joined the UN in 1999. |
| March 12, 1968 | United Kingdom | Mauritius | In personal union with the UK and many other countries until 1992. |
| September 6, 1968 | Eswatini | Restoration of independence after British protectorate, initial establishment in 1745. Originally named Swaziland until 2018. | |
| October 12, 1968 | Spain | Equatorial Guinea | Joined the UN on November 12. |
| June 4, 1970 | United Kingdom | Tonga | Independence restored after British protectorate. Initial independence declared from Tui Manu'a in 950. |
| August 9, 1970 | Oman | Independence restored after informal British protectorate. Initial independence declared from Abbasid Caliphate in 749. | |
| October 10, 1970 | Fiji | Restoration of independence after British colonial rule. Initial establishment in 1871. In personal union with the UK and many other countries until 1987. | |
| August 15, 1971 | Bahrain | Independence restored after British protectorate. Initial independence in 1783. | |
| September 3, 1971 | Qatar | Independence restored after British protectorate. Initial independence in 1868. | |
| December 2, 1971 | United Arab Emirates | Ras Al Khaimah originally not part of the union, joined in 1972. | |
| December 16, 1971 | Pakistan | Bangladesh | Unrecognized by Pakistan until 1974. |
| July 10, 1973 | United Kingdom | Bahamas | In personal union with the UK and many other countries. |
| September 24, 1973 | Portugal | Guinea-Bissau | Joined the UN in 1974. |
| February 7, 1974 | United Kingdom | Grenada | In personal union with the UK and many other countries. |
| October 19, 1974 | New Zealand | Niue[2] | Independence restored after British and New Zealand rule. Initial establishment before 1887. Partially unrecognized. In personal union with the UK and many other countries. In free association with New Zealand. |
| June 25, 1975 | Portugal | Mozambique | Joined the UN on September 16. |
| July 5, 1975 | Cape Verde | Joined the UN on September 16. | |
| July 6, 1975 | France | Comoros | Joined the UN on November 12. |
| July 12, 1975 | Portugal | São Tomé and Príncipe | Joined the UN on September 16. |
| September 16, 1975 | Australia | Papua New Guinea | In personal union with the UK and many other countries. |
| November 11, 1975 | Portugal | Angola | Joined the UN in 1976. |
| November 25, 1975 | Netherlands | Suriname | Joined the UN on December 4. |
| February 27, 1976 | Spain | Sahrawi Arab Democratic Republic[3] | Partially unrecognized. |
| June 29, 1976 | United Kingdom | Seychelles | Joined the UN on September 21. |
| June 27, 1977 | France | Djibouti | Joined the UN on September 20. |
| July 7, 1978 | United Kingdom | Solomon Islands | In personal union with the UK and many other countries. |
| October 1, 1978 | Tuvalu | In personal union with the UK and many other countries. | |
| November 3, 1978 | Dominica | Joined the UN on December 18. | |
| February 22, 1979 | Saint Lucia | In personal union with the UK and many other countries. | |
| July 12, 1979 | Kiribati | Joined the UN in 1999. | |
| October 27, 1979 | Saint Vincent and the Grenadines | In personal union with the UK and many other countries. | |
| April 18, 1980 | Zimbabwe | Restoration of independence after a brief return to British rule after the Rhodesian Bush War, which abolished the predecessor state of Rhodesia that was established in 1965. Initial establishment in the 13th century. | |
| July 7, 1980 | United Kingdom and France | Vanuatu | Joined the UN in 1981. |
| September 21, 1981 | United Kingdom | Belize | In personal union with the UK and many other countries. |
| November 1, 1981 | Antigua and Barbuda | In personal union with the UK and many other countries. | |
| September 19, 1983 | Saint Kitts and Nevis | In personal union with the UK and many other countries. | |
| November 15, 1983 | Cyprus | Northern Cyprus[3] | Largely unrecognized. |
| January 1, 1984 | United Kingdom | Brunei | Independence restored after British protectorate. Initial establishment in 1368. |
| September 30, 1989 | Senegambia | Gambia | Initial independence in 1965 from British rule, but would remain in personal union with the UK and many other countries until 1970. |
| Senegal | Initial independence in 1960 from Mali. | ||
| March 11, 1990 | Soviet Union | Lithuania | Independence restored after Russian and Soviet rule. Initial establishment in 1236. Not official until the formal disestablishment of the Soviet Union. |
| March 21, 1990 | South Africa | Namibia | Joined the UN on April 23. |
| May 4, 1990 | Soviet Union | Latvia | Independence restored after Soviet rule. Initial establishment in 1918. Not official until the formal disestablishment of the Soviet Union. |
| May 8, 1990 | Estonia | Independence restored after Soviet rule. Initial establishment in 1918. Not official until the formal disestablishment of the Soviet Union. | |
| December 22, 1990 | United States | Marshall Islands | In free association with the United States. |
| Micronesia | In free association with the United States. | ||
| April 9, 1991 | Soviet Union | Georgia | Independence restored after Russian and Soviet rule. Initial establishment in 302 BC. Not official until the formal disestablishment of the Soviet Union. |
| May 18, 1991 | Somalia | Somaliland[3] | Largely unrecognized. Independence restored after unification with Somalia. Initial independence from the United Kingdom in 1960. |
| May 29, 1991 | Ethiopia | Eritrea | Unrecognized by Ethiopia until 1993. |
| June 25, 1991 | Yugoslavia | Croatia | Independence restored after Hungarian, Habsburg, and Yugoslav rule. Initial establishment in the 7th century. |
| Slovenia | Independence secured on July 7 after victory in Ten-Day War. | ||
| August 24, 1991 | Soviet Union | Ukraine | Independence restored after Russian and Soviet rule. Initial establishment in 1649. Not official until the formal disestablishment of the Soviet Union. |
| August 25, 1991 | Belarus | Independence restored after Soviet rule. Initial establishment in 1918. Not official until the formal disestablishment of the Soviet Union. | |
| August 27, 1991 | Moldova | Independence restored after Russian and Soviet rule. Initial establishment in 1346. Not official until the formal disestablishment of the Soviet Union. | |
| August 31, 1991 | Kyrgyzstan | Not official until the formal disestablishment of the Soviet Union. | |
| September 1, 1991 | Uzbekistan | Not official until the formal disestablishment of the Soviet Union. | |
| September 9, 1991 | Tajikistan | Not official until the formal disestablishment of the Soviet Union. | |
| September 17, 1991 | Yugoslavia | North Macedonia | Originally named Macedonia until 2019. |
| September 21, 1991 | Soviet Union | Armenia | Independence restored after Russian and Soviet rule. Initial establishment in 331 BC. Not official until the formal disestablishment of the Soviet Union. |
| October 18, 1991 | Azerbaijan | Independence restored after Soviet rule. Initial establishment in 1918. Not official until the formal disestablishment of the Soviet Union. | |
| October 27, 1991 | Turkmenistan | Not official until the formal disestablishment of the Soviet Union. | |
| November 5, 1991 | Transnistria[3] | Not official until the formal disestablishment of the Soviet Union. Largely unrecognized. | |
| December 16, 1991 | Kazakhstan | Independence restored after Russian and Soviet rule. Initial establishment in 1465. Not official until the formal disestablishment of the Soviet Union. | |
| December 21, 1991 | Georgia | South Ossetia[3] | Restoration of independence after Georgian, Russian, and Soviet rule. Initial establishment in the late 9th century. Not official until the formal disestablishment of the Soviet Union. Largely unrecognized. |
Post–Cold War
| Date | Previous entity | Newly independent entity | Event |
|---|---|---|---|
| March 6, 1992 | Yugoslavia | Bosnia and Herzegovina | Restoration of independence after Ottoman, Habsburg, Yugoslav, and Croatian rule. Initial establishment in 1154. |
| May 19, 1992 | Iraq | Kurdistan[4] | Largely unrecognized. |
| July 23, 1992 | Georgia | Abkhazia[3] | Restoration of independence after Georgian, Russian, and Soviet rule. Initial establishment in 778. Largely unrecognized. |
| January 1, 1993 | Czechoslovakia | Czechia | Dissolution of Czechoslovakia. Initial establishment in 870. |
| Slovakia | Dissolution of Czechoslovakia. Initial establishment in 1939. | ||
| October 1, 1994 | United States | Palau | In free association with the United States. |
| May 20, 2002 | Indonesia | Timor-Leste | Independence restored after Indonesian occupation. Initial independence in 1975. |
| June 3, 2006 | Serbia and Montenegro | Montenegro | Independence restored after Yugoslav union. Initial establishment in 1516. |
| Serbia | Independence restored after Yugoslav union. Initial establishment in 780. | ||
| June 14, 2007 | Israel and Palestine | Gaza[4] | Effectively operating as a separate state since Hamas takeover of government. Largely unrecognized. Initial establishment in 15th century BC. |
| February 17, 2008 | Serbia | Kosovo[3] | Previously existed from 1991-2000 as a proto-state, Kosova. Partially unrecognized. |
| August 20, 2010 | Myanmar | Wa State[4] | Largely unrecognized. |
| July 9, 2011 | Sudan | South Sudan | Most recently recognized sovereign nation and 193rd UN member. |
| September 21, 2014 | Yemen | Houthi Yemen[4] | Effectively operating as a separate state since Houthis takeover of government. Largely unrecognized. |
| March 17, 2016 | Syria | Rojava[3] | Largely unrecognized. |
| October 1, 2017 | Cameroon | Ambazonia[3] | Largely unrecognized. |
| December 6, 2023 | Myanmar | Chinland[4] | Largely unrecognized. |
| April 1, 2024 | Somalia | Puntland[4] | Largely unrecognized. |
Timeline of states established by means other than declaring independence
| Date | Previous entity | Newly established entity | Event |
|---|---|---|---|
| December 5, 539 | Yamatai, Kununokuni, Nakoku, and other small Japanese states | Japan | Origins of the Japanese state are largely unknown. Traditional foundation date by Emperor Jimmu in 660 BC. Emperor Kinmei is largely considered to be the earliest historically attested non-legendary emperor of Japan, began his reign c. 539 AD. |
| January 19, 1479 | Crown of Castile and Crown of Aragon | Spain | Exactly when Spain was united is debated, the date given here is when Ferdinand II of Aragon, husband to Isabella I of Castile, ascended to the Aragonese throne and the Catholic Monarchs began to govern Spain as a de facto single realm. Legally, Castile and Aragon maintained separate institutions until the Nueva Planta Decrees issued between 1707 and 1716, and Navarre maintained separate institutions until 1841. |
| September 29, 1768 | Gorkha Kingdom and 29 small Nepalese kingdoms | Nepal | Prithvi Narayan Shah declares the establishment of the Kingdom of Nepal. Unification campaign continues to 1795 with the annexation of the Kingdom of Mustan. Subject to a de facto British protectorate from 1816 to 1923. |
| March 15, 1776 | Kingdoms of Thonburi, Phimai, Phitsanulok, Sawangkhaburi, and Nakhon Si Thammarat | Thailand | Completion of the reunification of Siam by Taksin the Great. Initial establishment in 1238. |
| January 1, 1801 | Kingdom of Great Britain and Kingdom of Ireland | United Kingdom | Acts of Union 1800 come into effect. Southern Ireland secedes in 1922. |
| January 14, 1814 | Denmark–Norway | Denmark | Treaty of Kiel which ceded Norway to Sweden after Denmark lost the War of the Sixth Coalition. Iceland would gain independence in 1918. Initial establishment in 936. |
| October 26, 1820 | North Haiti and South Haiti | Haiti | Haiti reunified after division following the death of Jean-Jacques Dessalines. Initial independence from France declared in 1804. |
| January 24, 1859 | Moldavia and Wallachia | Romania | Ottoman vassal until 1877. Transylvania and Bukovina would be annexed in 1918. |
| March 17, 1861 | Kingdom of Sardinia, United Provinces of Central Italy and Kingdom of the Two Sicilies | Kingdom of Italy | Proclamation of the Kingdom of Italy by Law No. 4761 of 1861. Venetia would be annexed in 1866, and Rome would be captured in 1870. |
| December 17, 1907 | Provinces of Trongsa, Paro, Punakha, Wangdue Phodrang, Daga, Bumthang, Thimphu, Kurtoed, and Kurmaed | Bhutan | Reunification of Bhutan under King Ugyen Wangchuck following centuries of civil wars resulting from power struggles created by the traditional diarchy. Subject to a de facto British protectorate from 1910 to 1947, and a de facto Indian protectorate from 1947 to 1971. Initial independence declared from Tibet in 1616. |
| October 29, 1923 | Ottoman Empire | Turkey | Declaration of the Republic of Turkey, superseding the previous Ottoman state. Hatay would be annexed in 1939. |
| December 22, 1932 | Kingdom of Hejaz and Nejd and Idrisid Emirate of Asir | Saudi Arabia | Abolition of the dual monarchy of Nejd and Hejaz, which is superseded by the Kingdom of Saudi Arabia. |
| October 25, 1945 | Republic of China | Taiwan[3] | Handover of Formosa on Retrocession Day by the Japanese Empire to the Republic of China, which has ruled the island ever since, having been exiled from the mainland after losing the Chinese Civil War. Largely unrecognized. |
| September 16, 1963 | Malaya, Sarawak, Sabah and Singapore | Malaysia | Merger of three former British colonies into a single federation by the Malaysia Agreement. Singapore would leave the union in 1965. |
| April 26, 1964 | Tanganyika (1961–1964) and Zanzibar | Tanzania | Creation of Tanzania, whose name is a portmanteau of "Tan" from Tanganyika and "Zan" from Zanzibar, which was mutually accepted by both the Nyerere government and the Revolutionary Government of Zanzibar. |
| July 2, 1976 | North Vietnam and South Vietnam | Vietnam | Reunified following the Vietnam War. The communist-led Democratic Republic of Vietnam declared independence in 1945. The anti-communist State of Vietnam was granted nominal independence in 1949. Initial establishment in 2879 BC. |
| May 22, 1990 | North Yemen and South Yemen | Yemen | Yemeni unification following colonial-era division between Kingdom of Yemen and Aden Protectorate. Initial establishment in 110 BC. |
| October 3, 1990 | East Germany and West Germany | Germany | Germany reunified after Cold War-era division. Initial unification in 1871. |
| December 25, 1991 | Soviet Union | Russia | Supersedes the Soviet Union under international law, although the Russian SFSR declared indepndence on December 12. Initial establishment in 1547. |
See also
- Age of Revolution
- Decolonization
- Human history
- List of national independence days
- List of sovereign states by date of formation
- List of wars of independence
- Modern era
- National revival
- Timeline of national flags
- Wars of national liberation