List of national border changes (1914–present)

Cases are only listed where there have been changes in borders, not necessarily including changes in ownership of a territory.

For instance, many European colonies in Africa became independent without any adjustment to their borders, although some did have many changes.

Also mentioned are some de facto changes, not recognized by the international community, such as Crimea, and South Ossetia.

Over 40% of the world’s borders today were drawn as a result of British and French imperialism.

[1][2][3] As a result of New Imperialism, the European countries with the most colonies throughout history were: the United Kingdom (130), France (90), Portugal (52), Spain (44), the Netherlands (29), Germany (20), Russia (17), Denmark (9), Sweden (8), Italy (7), Norway (6), and Belgium (3).

Italian East Africa was formed in 1936 through the merger of Italian Somalia , Italian Eritrea , and the newly occupied Ethiopian Empire , conquered in the Second Italo-Ethiopian War .
British decolonization in Africa.
Mauritania and Morocco agreed to divide Western Sahara among themselves in 1975. Mauritania relinquished its claim in 1979.
Location of Manchukuo (red) within Imperial Japan's sphere of influence
Britain's holdings on the Indian subcontinent were granted independence in 1947 and 1948, becoming five new independent states: India , Burma , Ceylon , Sikkim , and Pakistan (including East Bengal , from 1971 Bangladesh ).
Western New Guinea is formally annexed by Indonesia in 1969
Turkish-occupied Northern Cyprus (1974–present)
Israel annexed East Jerusalem in 1980 (see Jerusalem Law ) and the Golan Heights in 1981
Map of territorial changes in Europe after World War I (as of 1923).
Changes in national boundaries after the end of the Cold War .
All territories taken from Czechoslovakia by its neighbours in October 1938 ( Munich Agreement ) and March 1939
Poland is divided between its neighbors
Yugoslavia is partitioned
German-occupied Europe at the height of the Axis conquests in 1942
Post-war border changes in Central Europe and creation of the Communist Eastern Bloc
Map of the Federal Republic of Yugoslavia and Bosnia and Herzegovina in 1998
Regions of Ukraine annexed by Russia since 2014 ( Crimea ) and 2022 ( Donetsk , Kherson , Luhansk and Zaporizhzhia ), with a red line marking the area of actual control by Russia on 30 September 2022.
Trust Territory of the Pacific Islands in Micronesia administered by the United States from 1947 to 1986