The answer to your question is c
you are welcome
Explanation:
Industrial expansion and population growth radically changed the face of the nation's cities. Noise, traffic jams, slums, air pollution, and sanitation and health problems became commonplace. Mass transit, in the form of trolleys, cable cars, and subways, was built, and skyscrapers began to dominate city skylines.
Answer:
true
Explanation:
jk idk i just want the points
<span>New farming technologies increased food output.
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