Why are two or more languages spoken in some West African countries?

One of the reasons for the continent's rich linguistic diversity is simply down to time – people in Africa have had more time to develop languages than peoples elsewhere in the world. But the development of Africa's languages is also due to cultural and political factors.

Explanation:

South of a line connecting the course of the Sénégal River, the Niger River, and the southern two-thirds of Nigeria, Niger-Congo languages are spoken. Along the middle course of the Niger River and around Lake Chad, Nilo-Saharan languages related to those of peoples farther east predominate. These peoples are divided into a very complex ethnic mosaic but may often be conveniently classified by their individual languages.

Explanation:

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