Historians say he was the richest person to have ever lived. Today, his wealth would be worth more than 400 billion USD. Mansa Musa came to power in 1312 CEMansa Musa inherited a kingdom that was already wealthy, but his work in expanding trade made Mali the wealthiest kingdom in Africa. His riches came from mining significant salt and gold deposits in the Mali kingdom. Elephant ivory was another major source of wealtMusa went on Hajj to Mecca in 1324, traveling with an enormous entourage and a vast supply of gold. En route he spent time in Cairo, where his lavish gift-giving is said to have noticeably affected the value of gold in Egypt and garnered the attention of the wider Muslim world.