Mansa Musa, $400 billion
The richest person that has ever walked on this planet was Mansa Musa, or Musa I from Mali. When he was the reigning emperor of Mali, he had a fortune that would be worth about $400 billion today. Musa was born in 1280 and before 1337, he lived like a regular religious Muslim. He built many educational centers and mosques around Africa.
Just for comparison: the richest person alive at the moment, the founder of Amazon, Jeff Bezos, is worth about $131 billion and Bill Gates, with his $ 96.5 billion is the second person on the list of the richest people.
https://www.msn.com/en-in/money/photos/the-20-richest-people-of-all-time/ss-BBsg
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Gaddafi was assassinated by USA because he wanted to create currency backed up with gold and start doing oil transactions with it. If he did succeed USA would start spiraling down into recession because they would have nowhere to launder freshly printed dollars.
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However, the richest families are not publicly known.
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