Ida Tarbell accused John D. Rockefeller of attempting to create a monopoly in the oil industry through his monopolistic practices.
Ida Tarbell, in her work The History of the Standard Oil Company, accused John D. Rockefeller of trying to create a monopoly in the oil industry. She highlighted how Rockefeller utilized trusts to dominate the market, leading to monopolistic practices that gave him control over a vast percentage of oil refining in the United States.
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