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OpenStudy (anonymous):
Which was a major cause of environmental pollution in American cities during the late 1800s? A. coal-fired stoves, factories, and power plants B. diesel-powered railroad locomotives C. electric-powered streetcars D. internal-combustion engines in automobiles
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OpenStudy (anonymous):
It is A, as the other three were either not widespread enough to have an impact or not even invented by that point.
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