Nebraska is a state located on the Great Plains of the United States of America. Nebraska gets its name from a Chiwere word meaning "flat water," after the Platte River that flows through the state. Once considered part of the Great American Desert, it is now a leading farming state. Nebraskans have practiced scientific farming to turn the Nebraska prairie into a land of ranches and farms. Much of the history of the state is the story of the impact of the Nebraska farmer. Nebraskans are sometimes colloquially referred to as "Cornhuskers" (which is derived from the state nickname).

The Kansas-Nebraska Act of 1854 established the 40th parallel north as the dividing line between the territories of Kansas and Nebraska. As such, the original territorial boundaries of Nebraska were much larger than today; the territory was bounded on the west by the Continental Divide between the Pacific and Atlantic Oceans; on the north by the 49th parallel north (the boundary between the United States and Canada, and on the east by the White Earth and Missouri rivers. However, the creation of new territories by acts of Congress progressively reduced the size of Nebraska.

On February 28, 1861, Colorado Territory took portions of the territory south of 41° N and west of 102°03' W (25° W of Washington, DC). On March 2, 1861, Dakota Territory took all of the portions of Nebraska Territory north of 43° N (the present-day Nebraska-South Dakota border), along with the portion of present-day Nebraska between the 43rd parallel north and the Keya Paha and Niobrara rivers (this land would be returned to Nebraska in 1882). The act creating the Dakota Territory also included provisions granting Nebraska small portions of Utah Territory and Washington Territory — present-day southwestern Wyoming, bounded by the 41st parallel north, the 43rd parallel north, and the Continental Divide. On March 3, 1863, Idaho Territory took everything west of 104°03' W (27° W of Washington, DC).

The capital of the Nebraska Territory was at Omaha. During the 1850s there were numerous unsuccessful attempts to move the capital to other locations, including Florence and Plattsmouth. In the Scriptown corruption scheme, ruled illegal by the United States Supreme Court in the case of Baker v. Morton, local businessmen tried to secure land in the Omaha area to give away to legislators. The capital remained at Omaha until 1867 when Nebraska gained statehood, at which time the capital was moved to Lincoln, which was called Lancaster at that point.

A constitution for Nebraska was drawn up in 1866. There was some controversy over Nebraska's admission as a state, with some controversy over a provision in the 1866 constitution that restricted suffrage to white voters; eventually, on February 8, 1867, the United States Congress voted to admit Nebraska as a state provided that suffrage was not denied to non-white voters. The bill admitting Nebraska as a state was vetoed by President Andrew Johnson, but the veto was overridden by a supermajority in both Houses of Congress.

Under the original constitution, the Nebraska Legislature was bicameral. However, following a 1931 visit to Australia, Nebraska legislator George Norris campaigned for the abolition of the bicameral system, following the example of the Australian state of Queensland which had adopted a unicameral system ten years previously; he also argued that the bicameral system was based on the "inherently undemocratic" British House of Lords. In 1934, a state constitutional amendment was passed introducing a single-house legislature, and also introducing non-partisan elections (where members do not stand as members of political parties).

During the Second World War Nebraska was home to several prisoner of war camps. Scottsbluff, Fort Robinson, and Camp Atlanta (outside Holdrege) were the main camps. There were many smaller satellite camps at Alma, Bayard, Bertrand, Bridgeport, Elwood, Fort Crook, Franklin, Grand Island, Hastings, Hebron, Indianola, Kearney, Lexington, Lyman, Mitchell, Morrill, Ogallala, Palisade, Sidney, and Weeping Water. Fort Omaha housed Italian POWs. Altogether there were 23 large and small camps scattered across the state.