Sherman Antitrust Act: The Sherman Antitrust Act was passed in 1890 as a measure against monopolistic practices. It prohibited any contracts or conspiracies that restrained trade or created monopolies, including those within the oil industry.
Anti-Monopoly Movement: The anti-monopoly movement grew alongside concerns about big corporations dominating various industries during this time. People were advocating for legislation and actions to break up trusts and ensure fair competition.
Progressive Era: The Progressive Era was a period of social activism and political reform in the early 20th century. Breaking up trusts, including the oil trust, was one of the key objectives of this movement.