Concept:A front line state is an African country that actively supported the liberation struggle against colonial and white minority rule in Southern Africa.
Explanation:During the apartheid era, Nigeria strongly supported the liberation efforts in Southern Africa.
It provided financial, diplomatic, and material assistance to freedom fighters in countries like Angola, Mozambique, Zimbabwe, and South Africa.
Although Nigeria is located in West Africa, its significant contribution to these liberation movements earned it the status of a front line state.
This classification is different from Nigeria’s peacekeeping role in Liberia through ECOMOG, which is not what makes it a front line state.
Answer:C. supporting the liberation efforts in Southern Africa.