John Rockefeller

In 1917, his personal income was about 2.5% of total U.S. GDP, despite he started his career as a simple clerk.
John Rockefeller was born in New York in 1839. But his family moved to Pennsylvania. I must say that it was the key moment for the future of the Rockefeller’s Foundation, as the earth of Pennsylvania turned out to be extremely rich in oil resources. He wasn’t a boy from a wealthy family. His mother was a devout woman, but father wasn’t a good example of a husband or just a family man.