Final answer:
Laissez-faire economics in U.S. history led to government intervention to curb monopolies and promote competition.
Explanation:
Laissez-faire economics is the belief that economic markets should operate entirely free of government intervention to function efficiently. This approach was prevalent in the late 1800s in the U.S. during industrialization, but led to monopolies and lack of competition. President Theodore Roosevelt intervened to regulate industries and promote competition, which ultimately led to laws on safer working conditions and child labor.
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