Why was the construction of the transcontinental railroad so important? a. it linked the north and the south. b. it allowed the confederate forces to reach their battlefields quickly. c. it allowed plantation owners to ship their cotton to britain more quickly. d. it linked the nation from the atlantic to the pacific.

The correct answer is "D".

The Transcontinental Railroad is a network of railroads that connects the Pacific Coast to the Atlantic Coast of the United States. The first track was initially built in 1863 and concluded in 1869. The railroad lifted commerce among both shores in an unprecedented way and was also a way of transportation by which many people began settling out West.

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explanation:

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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