A is a fan shaped feature at mouth of a river

This alluvial fan, in Death Valley, California, is actually the mouth of a dried-up river. The river carried sediment called alluvium. An alluvial fan is a triangle-shaped deposit of gravel, sand, and even smaller pieces of sediment, such as silt. ... This sediment is called alluvium.

mali had been a state inside of the ghanaian empire. after ghana fell because of invading forces and internal disputes, mali rose to greatness under the leadership of a legendary king named sundiata, the "lion king." the songhai empire, already weakened by internal political struggles, went into decline.

you so !