John D. Rockefeller was not only the richest America who ever lived but also the richest human being in the history of the world with a net worth equivalent to $340 billion in 2012 dollars when he died in 1937. John D. Rockefeller was the founder of Standard Oil and eventually controlled over 90% of all the oil in The United States. Standard Oil was broken up by the US government for being a monopoly and was eventually broken up into what eventually became Amoco, Chevron Conoco, and ExxonMobil. He was the first American to ever be worth over $1 billion and donated over $500 million to charity upon his death.
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