Standard Oil Standard Oil Standard Oil Co. Inc. was an American oil producing, transporting, refining, and marketing company. Established in 1870 by John D. Rockefeller and Henry Flagler as a corporation in Ohio, it was the largest oil refinery in the world of its time. Its history as one of the world's first and largest multinational corporations ended in 1911, when the United States Supreme Court, in a landmark case, ruled that Standard Oil was an illegal monopoly. Standard Oil dominated the oil products market initially through horizontal integration in the refining sector, then, in later years vertical integration; the company was
The History of the Standard Oil Company independents who became one of Rockefeller's colleagues, as well as others close to the inner workings of Standard Oil, that included one of the founders Frank Barstow as well. Eventually, Tarbell uncovered a crucial piece of evidence proving that Standard Oil was rigging railroad prices and preying on its competition. Public outcry erupted at the conclusion of Tarbell's 19-part exposure of Standard Oil published in "McClure's," eventually resulting in the expedited breakup of Standard Oil in 1911. Journalists, politicians, and citizens alike celebrated the accomplishments of Tarbell - a woman "outside" the inner workings of business and without significant money