Answer:
the right answer is He negotiated a peace treaty between Russia and Japan.
Explanation:
The breakup of the Soviet Union ended basically ended the Cold War as they were the reason there was war. When they Soviet Union broke up the US was relieved and a new government was created to replace the soviets.
I don’t know why everyone is mean
By that time, railroads were proving a better method of long-distance transportation, and the Baltimore and Ohio<span> Railroad was being built west from Baltimore to</span>Cumberland<span>, mostly along the </span>Potomac River<span>, and then by a more direct route than the National Road across the Allegheny Plateau of </span>West Virginia<span>
hope this helps</span>