Jeff Bezos is viewed by as many as the richest person to ever have walked the Earth. However, there are many billionaires – and even trillionaires – that have come before him. I mean, have you seen Versaille? That being said, it can be challenging to estimate the wealth of someone who was born in the 1400s, or someone who owned a kingdom. But using the opinions of several different experts, a pretty clear list can be compiled. Today, we’re going to take a look at the 10 richest people of all time, and see how they earned their wealth and what they used it for.