Colonial borders in Africa

State boundaries in Africa were largely shaped by European conquest, negotiation, and colonial administration. Many became international borders after independence, often dividing communities or joining diverse populations.

Scramble for Africa: The rapid European conquest and occupation of most of Africa during the late nineteenth century. This partition created the colonial territories from which many present-day borders developed.
Effective occupation: A principle requiring a colonial power to demonstrate actual control over territory to validate its claim. The principle encouraged European powers to convert broad claims into occupied, administered zones.
Uti possidetis juris: A legal principle that new states retain the administrative boundaries they held before independence. African leaders invoked it to preserve colonial administrative lines as international borders.
Nigeria–Cameroon boundary: The international boundary separating Nigeria and Cameroon, shaped by British and German colonial rule. Its colonial history produced a long-running dispute over the Bakassi Peninsula.
Berlin Conference: An 1884–1885 meeting where European powers set rules for claiming territory in Africa. Its rules accelerated territorial claims, though the conference did not draw Africa’s borders itself.
Colonial administration: The institutions and practices through which imperial powers governed overseas territories. Administrative jurisdictions often supplied the territorial framework later used by independent states.
African Union Border Programme: An African Union initiative supporting border delimitation, demarcation, and cross-border cooperation. It addresses the practical and political challenges left by inherited boundaries.
Bakassi Peninsula: A peninsula at the head of the Gulf of Guinea, transferred from Nigeria to Cameroon after an international ruling. The dispute over its sovereignty shows how colonial-era instruments influenced later border judgments.
Anglo-German Agreement of 1890: An agreement that defined spheres of influence and territorial arrangements between Britain and Germany in Africa. Bilateral agreements like this settled boundaries without consulting African communities.
Boundary delimitation: The process of defining a boundary’s legal course, usually through treaties, maps, or legislation. Colonial treaties and maps formally described many borders before they were marked on the ground.

Linked from 7 pages