At the Yalta conference, significant concessions were made to the Soviet Union because the Western Allies wanted the U.S.S.R. to join the war against Japan. The correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer that has helped you.
Answer:nMining played an important role in the settling of the American West. Demand for minerals rose dramatically after the Civil War as the United States changed from a farming nation to an industrial nation. Mining also led to the building of railroads to connect the mines to factories back east.
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Kennedy's assassination created moments of chaos in the federal government that afternoon. led a united Congress to make a constitutional change, in the form of the 25th amendment.
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