List Of National Border Changes (1914–present)

Since World War I, there have been numerous changes in borders between nations, detailed below. For information on border changes from the end of the Napoleonic Wars to 1914, see List of national border changes from 1815 to 1914. 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, Artsakh, and South Ossetia.

Africa

* 1919 — The treaty of Versailles divides Germany's African colonies into mandates of the victors (which largely become new colonies of the victors). Most of Cameroon becomes a French mandate with a small portion taken by the British and some territory incorporated into France's previously existing colonies; Togo is mostly taken by the British, though the French gain a slim portion; German East Africa was separated between Belgium (Rwanda and Burundi), Portugal (the Kionga Triangle) and the United Kingdom (Tanganyika, later merging with Zanzibar to form Tanzania); and German South-West Africa (Namibia) becomes a mandate of South Africa. In September, France settles its African colonial borders with Italian Libya. On September 8, following the signing of the Anglo-French Convention of September 8, 1919, the borders of Italian Libya and French Chad are settled to the present-day boundaries., United States Department of State, October 16, 1961 A few days later, the borders of western and southwestern Libya are extended to their current boundaries after French concessions with the Franco-Italian Arrangement of 12 September 1919., United States Department of State, April 28, 1961
* 1923 — the city of Tangier becomes an International Free Zone after France and Spain end their control over parts of the city.
* 1924 — The UK cedes a portion of Jubaland to Italy (Trans-Juba, it. ''Oltregiuba'') as a reward for the Italians having joined the Allies in World War I.
* 1925 — The eastern borders of Libya and British Egypt are changed to their present boundaries, with the exception of parts of present-day southern Libya still remaining part of British Sudan.
* 1931 — France moves the control of the area of the present day Borkou-Ennedi-Tibesti Prefecture from the territory of Niger to Chad in French Equatorial Africa., United States Department of State, December 15, 1978
* 1934 — The borders of Libya are changed to their present-day boundaries after the Italo-British-Egyptian Agreement, British Sudan cedes northern territory to Libya.
* 1935 — The Franco-Italian Agreement cedes the Aouzou Strip from French Chad to Italian Libya.
* 1936 — After the success of Italy during the Second Italo-Abyssinian War, Ethiopia is annexed by Italy. Ethiopia joins with Eritrea and Italian Somaliland to form Italian East Africa. The international community does not accept Italy's occupation of Ethiopia and maintains relations with exiled Ethiopian Emperor Haile Selassie.
* World War II — With the outbreak of World War II, war arrives in Africa in 1940, with Italy joining the war, initially British forces in British Somaliland are defeated by the Italians coming from Italian East Africa and the territory is taken. However, by 1941, the British retake lost territory and take over Italian East Africa. In North Africa, after a period of retreat into Libya, Italian forces receive vital aid from the German army and the Germans move deep into Egypt by 1942, before beginning to lose ground. By 1943, The German and Italian forces retreat from Libya and capture Tunisia from France prior to fleeing to Sicily.
* 1951, December 24 — The Kingdom of Libya becomes independent.
*1952 — After WWII, Ethiopia was granted Eritrea.

* 1953, August 1 — Federation of Rhodesia and Nyasaland established from the British self-governing colony of Southern Rhodesia and the British protectorates of Northern Rhodesia, and Nyasaland.
* 1956, March 2 — French Morocco, the International Zone of Tangier, and most of Spanish Morocco join to become the independent nation of Morocco;
* 1957, March 6 — The United Kingdom annexes British Togoland and the Northern Territories protectorate as part of Her Majesty's dominions in Ghana, a new independent country within the British Commonwealth.
* 1957 — Tunisia gains independence.
* 1958 — French West Africa splits into Mauritania, Senegal, French Sudan (now Mali), French Guinea (now Guinea), Côte d'Ivoire, Niger

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