On May 10, 1869, the presidents of the Union Pacific and Central Pacific railroads meet in Promontory, Utah, and drive a ceremonial last spike into a rail line that connects their railroads. This made transcontinental railroad travel possible for the first time in U.S. history. No longer would western-bound travelers need to take the long and dangerous journey by wagon train.
Since at least 1832, both Eastern and frontier statesmen realized a need to connect the two coasts. It was not until 1853, though, that Congress appropriated funds to survey several routes for the transcontinental railroad. The actual building of the railroad would have to wait even longer, as North-South tensions prevented Congress from reaching an agreement on where the line would begin.
One year into the Civil War, a Republican-controlled Congress passed the Pacific Railroad Act (1862), guaranteeing public land grants and loans to the two railroads it chose to build the transcontinental line, the Union Pacific and the Central Pacific. With these in hand, the railroads began work in 1866 from Omaha and Sacramento, forging a northern route across the country. In their eagerness for land, the two lines built right past each other, and the final meeting place had to be renegotiated.