Final answer:
President Roosevelt tried to break up monopolies and trusts, such as the Standard Oil Trust led by John D. Rockefeller. He used the Sherman Antitrust Act to combat unfair business practices and promote competition.
Step-by-step explanation:
President Roosevelt tried to break up monopolies and trusts during his time in office. These were large corporations that had control over a particular industry, giving them the power to manipulate prices and stifle competition.
One example of a trust that Roosevelt tried to break up was the Standard Oil Trust, led by John D. Rockefeller. This trust controlled nearly all oil production in the United States, allowing them to set prices and drive smaller competitors out of business.
To combat these trusts, Roosevelt used the Sherman Antitrust Act of 1890, which aimed to prevent unfair business practices and promote competition. His efforts to break up trusts were part of his broader progressive agenda to regulate corporations and protect consumers.
Learn more about Trusts and monopolies during President Roosevelt's time in office