A civil war in Nigeria lasted for three years. Most countries in Africa supported the central government because of the fear of a similar breakup in their respective countries.
“The British, Italians and the Soviet Union supplied the central government with arms, while the French supplied limited quantities of arms to the Biafrans.”
The Biafrans were overwhelmed by the superior arms and troops of the government. On January 13th, Biafran forces surrendered.