Portal:History/Featured picture/February, 2006
The First Transcontinental Railroad in the United States was built across North America in the 1860s, linking the railway network of the eastern U.S. with California on the Pacific coast. Finished on May 10, 1869 at the famous Golden spike event at Promontory Summit, Utah, it created a nationwide mechanized transportation network that revolutionized the population and economy of the American West, catalyzing the transition from the wagon trains of previous decades to a modern transportation system.