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Answer:

Beginning in the early 1870s, railroad construction in the United States increased dramatically. ... Between 1871 and 1900, another 170,000 miles were added to the nation's growing railroad system. Much of the growth can be attributed to the building of the transcontinental railroads.

Explanation:

The Civil War was the defining event for nineteenth-century America, and railroads played an important role in the conflict. As the North industrialized rapidly between 1820 and 1860, railroads helped create --and prospered from -- the rise of factory production and diversified large-scale agriculture.

Answer:

eginning in the early 1870s, railroad construction in the United States increased dramatically. Prior to 1871, approximately 45,000 miles of track had been laid. Between 1871 and 1900, another 170,000 miles were added to the nation's growing railroad system. Much of the growth can be attributed to the building of the transcontinental railroads. In 1862, Congress passed the Pacific Railway Act, which authorized the construction of a transcontinental railroad. The first such railroad was completed on May 10, 1869. By 1900, four additional transcontinental railroads connected the eastern states with the Pacific Coast.

Four of the five transcontinental railroads were built with assistance from the federal government through land grants. Receiving millions of acres of public lands from Congress, the railroads were assured land on which to lay the tracks and land to sell, the proceeds of which helped companies finance the construction of their railroads. Not all railroads were built with government assistance, however. Smaller railroads had to purchase land on which to lay their tracks from private owners, some of whom objected to the railroads and refused to grant rights of way.

Explanation:

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