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OpenStudy (anonymous):

help!!!! Which did not pollute cities during the late 1800s? A. horses B. inadequate sewer systems C. coal D. too many automobiles

OpenStudy (anonymous):

Automobiles had just been invented in 1886, so depending what time and place you are studying I would guess cars or horses.

OpenStudy (anonymous):

d.no cars in this time period. its simple

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