B. the Yom-Kippur War
C. the Second World War
D. Anti-apartheid Movement
Option A – Pan-Africanism
The major external factor that promoted nationalism in Nigeria was Pan-Africanism.
Pan-Africanism efforts geared towards total emancipation of all black people throughout the world gingered the people into action against colonialism. The movement assisted African nationalist to articulate their demands and strongly supported their struggle for political independence.