The answer is A (American Civil War)
The responsibility for the Cold War on the Soviet Union and its expansion into Eastern Europe.
Answer:
Miners, ranchers, and farmers remade the land- scape of the West as they adapted to their new surroundings.
Explanation:
The geography of the West was further changed by the development and expansion of a large and successful railroad industry that moved the West's natural resources to eastern markets. Westward expansion profoundly changed American society. As the nation grew, more people looked west in order to obtain cheaper land
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