Final answer:
Laissez-faire economic policies led to the pollution of air and water due to lack of government regulations.
Explanation:
One outcome of laissez-faire economic policies was pollution of air and water. When businesses are left unchecked by government regulations, they may prioritize profit over environmental sustainability, leading to pollution. This was evident during the era of laissez-faire in the late 19th and early 20th centuries, as industrialization boomed.
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