There were many rich Americans from 65438 to 0800, but one of them was john D Rockefeller. John D Rockefeller is one of the richest men in American history. He is the founder of Standard Oil Company. At the end of 19, the American oil industry flourished. Rockefeller established a huge oil empire by monopolizing and integrating oil fields, refineries and oil transportation channels. His wealth made him one of the billionaires at that time, which had a great influence on American economy and society. So, in 1800, john D Rockefeller was one of the richest men in America.