The United Nations decided that they needed to have a peace-keeping force, a middle man, and treaties, so that they could try to stop wars from happening.
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Answer:
a. They were unsure they could protect themselves if attacked by larger nations.
Explanation: is correct
Restructuring of the south, and allowing the southern states back in
Having a railroad would make transportation of goods much easier. This would also make it safer and more efficient. There were a few risks involved but far less than transporting by conventional means.