Who Controlled 90% of the Oil Industry? The Story of Standard Oil

Discover how Standard Oil, led by John D. Rockefeller, controlled 90% of the US oil industry before its 1911 antitrust breakup.

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Standard Oil Co. Inc., founded by John D. Rockefeller and partners in 1870, once controlled about 90% of the United States oil industry. By the early 20th century, Standard Oil had established a near-monopoly over the oil industry, which led to a landmark antitrust case. In 1911, the U.S. Supreme Court mandated its dissolution into 34 independent companies due to its violation of antitrust laws, significantly altering the landscape of the oil and gas industry.

FAQs & Answers

  1. Who founded Standard Oil? Standard Oil was founded by John D. Rockefeller and his partners in 1870.
  2. Why was Standard Oil broken up? Standard Oil was broken up in 1911 by the U.S. Supreme Court because it violated antitrust laws by controlling about 90% of the oil industry, creating a monopoly.
  3. How many companies did Standard Oil split into? The U.S. Supreme Court ordered Standard Oil to be dissolved into 34 independent companies.
  4. What was the impact of Standard Oil's breakup? The breakup ended Standard Oil's monopoly and significantly changed the oil and gas industry's competitive landscape.

Watch More

For more insights into the history of the oil industry and landmark antitrust cases, explore our videos on the rise of modern oil companies and the impact of government regulations on monopolies.

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