Answer :
Final answer:
The settlement of the Great Plains had multiple significant impacts, including making the U.S. a leading exporter of wheat, establishing new farms and ranches, and escalating conflicts between white Americans and Native Americans.
Explanation:
All of these choices are correct. The settlement of the Great Plains did indeed help the U.S. become the leading exporter of wheat due to the vast agricultural opportunities it offered. It also resulted in many new farms and ranches, contributing to the economic development of the region. Lastly, the settlement led to increased conflicts between white Americans and Native Americans as settlers and indigenous peoples clashed over land and resources.
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