In the late 1800's the main causes of pollution were horse manure, polluted ground water and coal therefore this statement is True
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Answer: The reason America became involved in WWI was because Germany started sinking American merchant ships around the British isles
Explanation: Originally, America wanted nothing to to with the war because they weren't concerned about about events and alliances in Europe, and thus stayed out of the war. But eventually German forced our hand and we joined.
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City planners adopted railroad technology in the Industrial Age to help out commuters. Since a lot of factories were not located close to homes, people took the train to get to work as their way of transportation.
