Who Built the Pacific Railway? The Two Companies That Connected a Continent

The First Transcontinental Railroad (1863–1869) was built by two competing companies meeting at Promontory Summit, Utah:

• Central Pacific Railroad (CPRR) – Built eastward from Sacramento, CA. Backed by the "Big Four" (Stanford, Huntington, Hopkins, Crocker). Largely Chinese immigrant labor (~12,000). Crossed Sierra Nevada.
• Union Pacific Railroad (UPRR) – Built westward from Omaha, NE/Council Bluffs, IA. Backed by Durant, Ames, Dodge. Largely Irish immigrant & Civil War veteran labor. Crossed Great Plains, Rocky Mountains.

Completion: May 10, 1869 – Golden Spike ceremony. Reduced coast-to-coast travel from months to days. Transformed US economy, settlement, and Indigenous lands.