How did ghana prosper from trade?

Preachers who were part of the great awakening urged people to

Aryans believed that the most important thing in life was warfare. if this statement is true, which of the following facts best supports it?

Which factor contributed to the rise of african empires such as ghana and mali ? a. their creation and involvement in trade networks b. they focused only on agricultural production. c. they didn’t engage in warfare with other nations d. their geographic location protected them from attacks.