Answer:
Central Pacific. ... By spring 1869, Central Pacific had made it through the mountains and onto the relatively flat land of western Utah, constructing 690 miles of track through some of the most difficult terrain ever encountered by a railroad.
Explanation:
I believe the answer you are looking for is A.
It was the atrocities of "(D) Valeriano Weyler" that helped lead the United States to war with Spain <span>during the end of the 19th century, since many Americans were infuriated by his treatment of peasants. </span>
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