Many of the people in sub-saharan africa speak more than one language because

Official business is conducted in a language other than the local language.

Explanation:

Many people in Sub-Saharan Africa grow up speaking the common dialect of their household or village, in which there are thousands. As they look for a career though, most businesses operate in either French or English. Thus, most Sub-Saharan Africans use their common dialect with their family and their business language in their workplace.

Mark Please

Multilingual societies are quite common in sub-Saharan Africa. Ethnic and tribal languages exist for conversation and trade. Many Africans interact with one another through regional associations and thus speak to a wide variety of individuals who speak different languages and dialects. Moreover, much of sub-Saharan Africa was colonized by various European powers. The languages of the colonizers often became the lingua franca of the country or region. So Africans can speak ethnic and regional languages as well as a variety of European languages.

Explanation: Languages are essential for communication, social interaction and trade.

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explanation: