Why did Ida tarbell want to expose the unfair patrices of john d Rockefeller?

Ida Tarbell sought to expose the unfair practices of John D. Rockefeller and the Standard Oil Company because she believed in the principles of fairness and accountability in business. Having witnessed the negative impact of monopolistic practices on small businesses and consumers, she aimed to shed light on the unethical tactics employed by Rockefeller to eliminate competition and maintain his monopoly. Her investigative journalism was driven by a commitment to social justice and the desire to inform the public about corporate abuses of power. Ultimately, her work contributed significantly to the movement for antitrust reforms in the United States.