In 1981,Nigeria participated in an Organization of African Unity peace-keeping force to replace Libyan forces in

A.

Somalia

B.

Chad

C.

Ethiopia

D.

Zaire

Correct answer is B

In 1981, Nigeria participated in an Organization of African Unity peace-keeping force to replace Libyan forces in Chad. 

Five African nations formally agreed to the the deployment of peacekeeping troops in Chad. the first such force assembled by the Organization of African Unity.

President Goukouni Oueddei of Chad met with Kenya's President, Daniel arap Moi, and officials from four of the six African nations that have pledged to contribute troops to the force. The O.A.U. soldiers will replace Libyan troops that have withdrawn.