Answer:
The Pacific Railway Act and its amendments were a series of congressional acts supporting the construction of a transcontinental railway line across the United States, allowing the issuance of government bonds and the granting of land for the benefit of the railways. The Pacific Railroad Act of 1862 was the original act. It was later amended and expanded in 1863, 1864, 1865 and 1866.
With the enactment of this law and its modifications, the railroad line of the United States was expanded throughout the center and west of the country. In this way, cities were created on the side of the roads, both by those who worked in the construction of the railway line and by those who obtained land through the Homestead Act.
The 1862 Pacific Railway Act inspired the construction of the Transcontinental Railway which drove westward expansion.
There were certain reasons why westward expansion increased from the mid 1800s onwards and some of them are:
The Transcontinental Railway connected eastern U.S.A. to the western territories and made it so much faster to get there and well as transport goods and services which encouraged people to move west.
Seeing as the Transcontinental railway would not have been built were it not for the Pacific Railway Act, we can conclude that the act was responsible for an increase in westward expansion.
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