What made Standard Oil a horizontal integration monopoly? A. It controlled all aspects of oil production. B. It owned ninety percent of US oil refineries. C. It formed a trust. D. It operated all across the United States.
History · High School · Tue Nov 03 2020
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Standard Oil became a horizontal integration monopoly primarily due to option B) It owned ninety percent of US oil refineries. Through strategic acquisitions and aggressive business practices, Standard Oil accumulated ownership of a vast majority of oil refineries in the United States. This dominance across multiple regions allowed Standard Oil to control a significant portion of the refining sector within the oil industry, establishing a horizontal monopoly.