Which west african kingdoms grew wealthy by controlling the trans-saharan gold and salt trade netowrk

Kingdoms of Ghana and Mali.

macon. i believe thats the answer

sorry if im wrong.

they had many gains 1 one freedom for slaves the major cause of the civil war is that the   north wanted freedom for slaves but the south didn; t creaitng the civil war

another gain they have is poltiical influence

poltiical influence is a big thing everywhere even now peoplle are always trying to get the head up in poltics thats what they did by giving the republicians a good name for freeing slaves