A simple, yet precise definition of civilization would be from the author of young adult books, John Green describes civilization as it requires having surplus production of food. Most civilizations were near the river. This also includes the existence of a government, labor, and trade.
<span><u> Downfall of Mali Empire:</u> </span>Weakened by attacks and internal rewbellion. The Mali lost it's hold on the Gold and Salt trade. The Songhai empire was then able to grow in power and take previously held Mali territories.
<u> Downfall of Songhai Empire:</u> The moroccan armies invaded songhai, which led the fall of songhai empire.
<u> D</u><u>ownfall of Ghana Empire</u>:In the 11th century, when the Almoravids, a militant confederation of Muslims, began to attack the empire and even conquered it for a time. Though their grip on power did not last long, the chaos they brought to the region destabilized trade, hurting the empire's sources of income.
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