Many of the business trusts created in the late 1800s were eventually declared illegal primarily because they eliminated competition by forming monopolies.
Business trusts from the 1800s were declared illegal mainly due to their role in creating monopolies that stifled competition. The Sherman Antitrust Act of 1890 was enacted to combat these practices, leading to notable legal actions like the breakup of Standard Oil. The emergence of these trusts raised concerns about democracy and wealth inequality, prompting further regulatory measures.
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