Oliver's well-researched biography of Mansa Musa echoes the style of an exotic tale of gold, glory, and adventure. During his long reign as Mali's emperor, Mansa Musa led his empire into its Golden Age; presided over a spectacular, 60,000 person, 9,000 mile pilgrimage; founded a university in Timbuktu; and helped revolutionize architecture across the Sudan. Many of the African ancestors of today's African-Americans came from West Africa. From 700 -- 1600 A. D., one after the other, three great, black, commercial empires dominated West Africa. They were powerful, prosperous, complex, stable -- and large. At its height, the Empire of Mali was the size of all of Western Europe. Well-crafted and fast paced, Oliver's book did not only clearly portray Mansa Musa's triumphs and dilemmas, but also the lives of the people of medieval Mali.