The document summarizes the early origins and migrations of humans out of East Africa according to anthropological evidence. It then discusses several major West African empires such as the Bantu migrations, Nubia, Ghana, Mali, and Songhai. For Mali, it focuses on the great ruler Mansa Musa and how his pilgrimage to Mecca in 1324 spread Islamic learning and reflected Mali's vast wealth at the time. The civilizations traded goods, had various forms of governance, and some converted to Islam over time.