How did the Kingdom of Ghana grow wealthy and powerful from 750 to 1240?
A. By hunting and gathering food
B. By building the world's largest army
C. By controlling salt and gold trade routes
D. By capturing almost all of northern Africa

It developed as a reaction to the impact of european colonialism in africa on peoples of african descent. in the  mid-20th century, activists in africa adopted pan-africanism as a rallying cry for independence from colonial rule. some african pan-africanists sought to unite the continent as one independenthope it was useful

True,  spain conquered the incas and the aztecs for their gold and silver.