Most African borders were drawn by European powers at the 1884–85 Berlin Conference and subsequent treaties, with little regard for existing ethnic, linguistic, or cultural boundaries. Colonial administrators used:
Result: Countries like Nigeria (250+ ethnic groups), DRC (200+), Kenya (40+) contain immense diversity within artificial borders. This fuels challenges: conflict, marginalization, governance deficits. Responses include decentralization, affirmative action, civic education, and truth/reconciliation efforts to build inclusive nations.