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John D Rockefeller
He built his first oil refinery near Cleveland and in 1870 incorporated the Standard Oil Company. By 1882 he had a near-monopoly of the oil business in the U.S., but his business practices led to the passing of antitrust laws. -
Jp Morgan
Jp Morgan used his influence to help stabilize American financial markets during several economic crises, including the panic of 1907.
