Mansa Musa on His Way to Mecca, c1670, (1903) [Getty Images]

Mansa Musa on His Way to Mecca, circa 1670, (1903). Mansa Musa (circa 1280-circa 1337) Emperor of Mali, went on a pilgrimage to Mecca in 1324. He is said to have traveled with an entourage of 60,000. From The Worlds History, Volume III, by Dr. H. F. Helmolt [William Heinemann, London, 1903] Artist: Unknown. (Photo by Print Collector/Getty Images)

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