2. John D. Rockefeller (Wealth: $340B)
1. Mansa Musa (Wealth: $400B)
The richest man that ever walked the earth (to date) is Mansa Musa, the emperor of Mali. Musa, born in 1280, was able to grow his wealth through the country’s natural resource — gold. The emperor lived such a lavish lifestyle where it was believed that his pilgrimages to Mecca involved dozens of camels carrying pounds after pounds of gold. It is also believed that Musa had a huge army of 200,000 men with 40,000 archers. Besides spending money on himself, Musa also built educational structures and mosques, some of which still stand today.