Exxon, Mobil, Chevron, and Amoco were created from what company, broken up by the Sherman Antitrust act in 1911?
United States antitrust law some minor competitors remained in business. In 1911 the Supreme Court agreed that in recent years (1900–1904) Standard had violated the Sherman Act (see "Standard Oil Co. of New Jersey v. United States"). It broke the monopoly into three dozen separate companies that competed with one another, including Standard Oil of New Jersey (later known as Exxon and now ExxonMobil), Standard Oil of Indiana (Amoco), Standard Oil Company of New York (Mobil, again, later merged with Exxon to form ExxonMobil), of California (Chevron), and so on. In approving the breakup the Supreme Court added the "rule of reason": not all
Henry Flagler New Jersey in violation of the Sherman Antitrust Act. By then the trust still had a 70% market share of the refined oil market but only 14% of the U.S. crude oil supply. The court ruled that the trust originated in illegal monopoly practices and ordered it to be broken up into 34 new companies. These included, among many others, Continental Oil, which became Conoco, now part of ConocoPhillips; Standard of Indiana, which became Amoco, now part of BP; Standard of California, which became Chevron; Standard of New Jersey, which became Esso (and later, Exxon), now part of ExxonMobil; Standard