Musa I (1280 – 1337) was the ninth Mansa of the Mali Empire, which reached its territorial peak during his reign. Musa is known for his wealth and generosity. He has been subject to popular claims that he is the wealthiest person in history, but his actual wealth is not known with any certainty. His riches came from the mining of significant gold and salt deposits in the Mali Empire, along with the slave and ivory trade.