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| John D Rockefeller -Business Man |
Singleness of purpose is one of the chief essentials for success in life, no matter what may be one's aim. - John D Rockefeller
John Davison Rockefeller, Sr. (1869-1937) was an American business magnate and philanthropist. He was a co-founder of the Standard Oil Company, which dominated the oil industry and was the first great U.S. business trust. - Wikipedia
