It is D ) whether slavery would spread across the United States
Answer:
The steel highway improved the lives of millions of city dwellers. By the 1890s, the United States was becoming an urban nation, and railroads supplied cities and towns with food, fuel, building materials, and access to markets. The simple presence of railroads could bring a city economic prosperity.
Explanation:
I hope this helps :)
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I believe the answer would be C due to the fact that it touches on different reasons in the paragraph and doesn't speak on only 1 reason of marriage <span />
