25 May 1963 — Thirty-two heads of state meet in Addis Ababa to found the Organisation of African Unity. A year later they pledge to retain the borders inherited from empire. Historians still debate the choice: did it guarantee peace, or freeze injustice in place?
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25 MAY 1963 · THE DECOLONIZATION OF AFRICA, 1945–1994
The moment in context
The borders African leaders inherited had little claim to justice. Colonial powers had divided communities and joined others in states their inhabitants had not chosen. Yet the leaders who met in 1963–64 also had to consider what might happen if governments began to redraw those lines. Katanga had shown how destructive a secession could be; disputes over other frontiers might multiply such conflicts. They chose to protect the inherited borders. Most international frontiers held, even when governments were overthrown, and wars between African states remained rare. The decision left the pressures inside those frontiers for the new governments to confront.
Why it happened — The border decision of 1964. In 1964 the OAU chose to protect inherited colonial borders under uti possidetis. The reasoning was preventive: once one frontier was reopened,…
The turn — Addis Ababa & Cairo, 1963–64 — the borders are frozen. African leaders founded the OAU at Addis Ababa in 1963 and resolved at Cairo in 1964 to respect inherited frontiers. Few decisions did more to shape…
What it changed — Biafra and the cost of unity. When Biafra seceded, most African states supported the Nigerian federation. Defenders of the blockade presented it as the price of national unity; a…
Then ask the room: The OAU’s decision to keep colonial borders is defended as the guarantor of African peace and attacked as the freezing of colonial injustice. Weigh the case. The argued answer is on the chapter page →
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