Musa I of Mali

Musa I (c. 1280–1337), often called Mansa Musa, was the tenth mansa (emperor) of the Mali Empire in West Africa and is widely considered one of the richest individuals in human history. His reign from 1312 to 1337 marked the height of Mali's power and prosperity. In 1324, Musa undertook a pilgrimage to Mecca that became legendary throughout the Islamic world and beyond; his entourage of 60,000 people, including 12,000 enslaved individuals carrying bars of gold, was so lavish that it reportedly caused inflation across the Mediterranean region. This journey significantly raised Mali's profile on the global stage and demonstrated the empire's immense wealth derived from gold and salt trade. Upon his return, Musa invested heavily in Timbuktu and other cities, establishing mosques, madrasas, and libraries that made them intellectual centers of Islamic learning. His patronage of scholars and architects transformed Mali's cultural landscape. Though his exact wealth is impossible to calculate by modern standards, historians estimate his fortune far exceeded that of modern billionaires when adjusted for purchasing power.