Musa Keita I (1280 CE - 1337 CE) , also known as Mansa Musa (moo - sa) was the tenth Musa (sultan, king, conqueror , etc...) of the West African Mali Empire.
With an inflation adjusted fortune of somewhere around $400 billion he is regularly stated to, possibly, be the richest person to have ever lived, being described as inconceivably rich by his contemporaries.
This is due to the fact that during his reign Mali may have been the largest producer of gold in the world, at a point of exceptional demand.
He was so rich that when he made his hajj, the traditional pilgrimage to Mecca, as he was Muslim, he brought with him 60,000 men, including 12,000 slaves who each carried, at least, 1.8 kg (4 lb) of gold bars and heralds, dressed in silks, who bore gold staffs, organized horses and handled bags.
Musa provided all necessities for the procession, feeding the entire company of men and animals. Those animals included 80 camels, which each carried 23 - 136 kg (50 - 300 lb) of gold dust.
Musa not only gave to the cities he passed on the way to Mecca , but also traded gold for souvenirs, overpaid for rooms, tipped with handfuls of gold dust and even regularly just gave gold bars away to the poor.
It was even documented that he had a new mosque built every Friday for him to pray in during the pilgrimage.
But Musa's generous actions inadvertently devastated the economy of the regions through which he passed.
In the cities of Cairo, Medina and Mecca, his very destination, the sudden influx of gold devalued the metal for the next 10 - 12 years. Prices on goods and wares greatly inflated.
To rectify the gold market, on his way back from Mecca, Musa borrowed all the gold he could carry from money-lenders in Cairo, at high interest.
This is the only time in recorded history that one man directly controlled the price of gold in the Mediterranean.
Holy shit! No one let Joel know about this guy.
He'll probably think he's the Anti-Christ, after making gold next to worthless.
Further Info: https://en.m.wikipedia.org/wiki/Musa_I_of_Mali