answersLogoWhite

0

John D. Rockefeller established a monopoly in the oil industry primarily through aggressive business practices, including horizontal integration. He founded Standard Oil in 1870 and systematically bought out competitors, consolidating control over oil refining and distribution. By negotiating favorable railroad shipping rates and implementing cost-cutting efficiencies, he undercut rivals and expanded his market dominance. Ultimately, these strategies allowed him to control about 90% of U.S. oil refining by the early 20th century.

User Avatar

AnswerBot

1mo ago

What else can I help you with?