African countries, 1918–1939
After the First World War almost all of Africa was in the hands of European states – Britain, France, Belgium, Portugal, Italy and Spain; only Ethiopia and Liberia stayed independent (Egypt was formally independent from 1922). Former German colonies were divided under League of Nations mandates (for example Tanganyika to Britain, Ruanda-Urundi to Belgium, South West Africa to the Union of South Africa). The metropoles built railways, ports and administration and used compulsory or cheap local labour on plantations and in mines; traditional chiefs were often incorporated into colonial rule. In North Africa Egypt declared independence in 1922 (Britain kept some powers) and adopted a constitution in 1923; national movements against French rule grew in Algeria, Tunisia (Habib Bourguiba) and Morocco; in Libya resistance to Italian conquest was suppressed with the execution of Omar Mukhtar in 1931. In tropical Africa political organisations appeared: in South Africa the African National Congress had been formed in 1912, and the Pan-African congresses (from 1919; W. E. B. Du Bois) demanded an end to racial discrimination. In 1926 the League adopted the Slavery Convention. In the Second World War Africa gained strategic importance and hundreds of thousands of Africans served at the fronts.
Map: colour Africa as of 1939: Britain (red), France (blue), separate colours for Belgium, Portugal, Italy, Spain and independent states.