The answer may be 1. It can’t be 2 or 4 because they corolate
Aside from connecting the East U.S. to the West U.S., the transcontinental railroad was also instrumental in driving a gap through the confederate territories and ending the reconstruction era. (Choices A and D are the answers.)
Hope my answer has come to satisfy your query.
Answer:
for this question number 3 is b
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