The 1884-85 Berlin Conference partitioned Africa among European powers with rulers, not rulers—straight lines drawn in European capitals by men who'd never seen the terrain. The consequences echo today.
Borders split cohesive groups and merged hostile ones:
DR Congo: 250+ ethnic groups in a territory designed for resource extraction (rubber, minerals), not governance. Persistent conflict since 1960 independence.
Sudan/South Sudan: 1956 border drawn by British separated Arab/Muslim north from African/Christian/animist south—two civil wars (1955-72, 1983-2005), 2011 secession, ongoing border disputes.
Nigeria: Amalgamated 1914 (North/South protectorates) for administrative convenience—Hausa-Fulani, Yoruba, Igbo plus hundreds of minorities. Biafra war (1967-70), persistent sectarian violence.
Rwanda/Burundi: Belgian colonial rule hardened Hutu/Tutsi distinctions into identity cards—fueling 1994 genocide.
African Union maintains colonial borders (uti possidetis juris) to avoid endless wars—but supports regional integration (AfCFTA, EAC, ECOWAS) to transcend them economically. Some advocate federal/devolved models accommodating diversity within existing states.
The borders are artificial; the nations built within them are real—and still negotiating the terms of coexistence.