Central Pacific Railroad:The Central Pacific Railroad was the western segment of the first transcontinental railroad, starting in Sacramento, California, and connecting with the Union Pacific Railroad at Promontory Summit, Utah.
Transcontinental Railroad: The Transcontinental Railroad refers to the interconnected railway system that linked the eastern United States to the western territories, completed in 1869 with the joining of the Union Pacific and Central Pacific railroads.
Pacific Railway Act:The Pacific Railway Act of 1862 was legislation that authorized the construction of the transcontinental railroad and provided federal support and land grants to encourage its building.