Concept: The Berlin Conference of 1884/85 divided Africa among European powers, and Nigeria fell within the British sphere in West Africa.
Explanation:The Berlin Conference formalised European claims during the Scramble for Africa.
Britain already had strong commercial and political interests along the West African coast.
As a result, the territories that later became Nigeria were placed under British protection.
Nigeria is geographically located in West Africa, along the Gulf of Guinea.
Other British West African colonies included Ghana, The Gambia, and Sierra Leone.
Therefore, the conference made Nigeria a British West African colony.
Answer: D. West Africa