How do members of different ethnic groups in West and Central Africa communicate?

Sign language helps people of different ethnicities communicate.

Members of different ethnic groups do not communicate.

Those of different ethnic groups must find an interpreter.

Most people of these regions have the ability to speak several languages.

Question

How do members of different ethnic groups in West and Central Africa communicate?

    Sign language helps people of different ethnicities communicate.

    Members of different ethnic groups do not communicate.

    Those of different ethnic groups must find an interpreter.

    Most people of these regions have the ability to speak several languages.

anonymous · Answer

sorry wrong subject

solomonzelman · Answer

This question is more likely from http://openstudy.com/study#/groups/History but I am sure they communicate somehow, despite that there are over 100 different tribes/clans. I believe they use 'Sango' (one of the tribe languages) to communicate in it. $\large\color{darkgoldenrod}{ \rm {(~~dirty~~~~google~~~~search~~) } }$