Nevada's entry into statehood in the United States on October 31, 1864, in the midst of the American Civil War, was expedited by Union sympathizers in order to ensure the state's participation in the 1864 presidential election in support of President Abraham Lincoln. Thus Nevada became one of only two states admitted to the Union during the war (the other being West Virginia) and earned the nickname that appears on the Nevada state flag today: "Battle Born".
Because its population was exceedingly small, Nevada was only able to muster 1,200 men to fight for the Union Army, but Confederate forces never posed any serious threat of territorial seizure, and Nevada remained firmly in Union control for the duration of the war. Largely isolated from the major theaters of the conflict, Nevada nonetheless served as an important target for political and economic strategists before and after gaining statehood. Its main contribution to the cause came from its burgeoning mining industry: at least $400 million in silver ore from the was used to finance the federal war effort. In addition, the state hosted a number of Union military posts.
Prior to the Civil War, the geographic area that makes up present-day Nevada belonged to several different U.S. territories. The region had long held economic ties to northern industry and financing, especially after the discovery of gold and silver in the eastern Sierra Nevada in the late 1850s, and was populated predominantly by secular Unionists who opposed slavery and sought some sort of territorial incorporation to bolster the area's economic growth: either through annexation by California or organization as an independent territory. Many early Nevadans also sought political segregation from Mormons living to the east, with whom they were often engaged in ideological conflict.