Answer:
Feudalism
Explanation:
A feudal system (also known as feudalism) is a type of social and political system in which landholders provide land to tenants in exchange for their loyalty and service.
Origins of Feudalism
The system had its roots in the Roman manorial system (in which workers were compensated with protection while living on large estates) and in the 8th-century kingdom of the Franks where a king gave out the land for life (benefice) to reward loyal nobles and receive service in return.
The main items traded were gold and salt. The gold mines of West Africa provided great wealth to West African Empires such as Ghana and Mali. Other items that were commonly traded included ivory, kola nuts, cloth, slaves, metal goods, and beads.
I'm pretty sure its A. The collapse of Christianity.
