Kansas Territory
The Territory of Kansas was an organized incorporated territory of the United States that existed from May 30, 1854, until January 29, 1861, when the eastern portion of the territory was admitted to the Union as the state of Kansas.
Kansas in the American Civil War
The Territory of Kansas was admitted to the Union on January 29, 1861, in the midst of the national secession crisis: six states had already seceded, and five more would follow in the coming months. The Kansas–Nebraska Act of 1854 had rescinded the former Missouri Compromise and permitted the territories of Kansas and Nebraska to determine whether they would enter the Union as slave or free states by popular sovereignty. Violence between pro-slavery and anti-slavery groups began almost immediately. The conflict was especially bloody along the Kansas–Missouri border, where Missouri Border Ruffians and Kansas Free-Staters formed bands of partisan rangers to raid and pillage opposition strongholds, earning it the name "Bleeding Kansas". Kansas' popular vote eventually chose against slavery, so Kansas would fight with the North.