How did the west African kingdoms become wealthy select the best answer from the choices below

Ghana's rulers gained incredible wealth from trade, taxes on traders and on the people of Ghana, and their own personal stores of gold. They used their wealth to build an army and an empire. Extensive trade routes brought the people of Ghana into contact with people of many different cultures and beliefs.

Explanation:

byzantine empire is the answer i think you are looking for.

hope this : )

answer: (fluidity)is the correct answer.

explanation: because of this characteristic, success on the battlefield depends in large part on the ability to adapt to proactively change events to our advantage as well as to react quickly to constantly changing conditions