Describe the african kingdoms of ghana, kush, mali, and aksum, and identify their contributions to the world. then, explain the factors that made east africa a center for trade. use specific examples from your research to support your statements.in 7-8 sentences? ?

Ghana had many resources, but location delayed development as trading empire After Ghana’s decline, no one kingdom controlled trans-Saharan trade. In the 1230s, the empire of Mali rose to power on the same territory. Mali expanded to the Atlantic OAksum began to decline, partly because of arrival of Muslim invaders