Kansas Territory was an incorporated territory of the United States that existed from May 30, 1854 to January 29, 1861. Kansas Territory was established by the politically significant Kansas-Nebraska Act. The original borders of the territory from were the Missouri border to the summit of the Rocky Mountain range; the southern boundary was the 37th parallel, the northern was the 40th parallel. Much of the eastern region of what is now the state of Colorado was part of Kansas Territory until the establishment of a separate Colorado Territory on February 28, 1861.
