The Rockefellers

John D Rockefeller started out with one kerosene refinery in Cleveland, Ohio. Within 15 years it became the largest oil producer in the world. After conquering the fuel industry, the Rockefe... Read allJohn D Rockefeller started out with one kerosene refinery in Cleveland, Ohio. Within 15 years it became the largest oil producer in the world. After conquering the fuel industry, the Rockefellers gave much of their wealth away through philanthropy.John D Rockefeller started out with one kerosene refinery in Cleveland, Ohio. Within 15 years it became the largest oil producer in the world. After conquering the fuel industry, the Rockefellers gave much of their wealth away through philanthropy.