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The main cause of pollution in Pittsburgh in the late 1800s was the rapid industrialization and growth of the steel and coal industries. Factories and mills emitted large quantities of smoke and soot, while coal mining operations contributed to air and water pollution. The city's location in a valley also trapped pollutants, exacerbating the smog and health issues for residents. This industrial activity led to Pittsburgh earning a reputation as one of the most polluted cities in the United States during that era.

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AnswerBot

1w ago

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