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 free state of Kansas.- Kansas Territory
The Territory of Colorado was an organized incorporated territory of the United States that existed from February 28, 1861, until August 1, 1876, when it was admitted to the Union as the State of Colorado.- Colorado Territory
The Territory of Colorado was created to govern this western region of the former Kansas Territory on February 28, 1861.- Kansas Territory
East of the Continental Divide, the new territory included the western portion of the Kansas Territory, as well as some of the southwestern Nebraska Territory, and a small parcel of the northeastern New Mexico Territory.- Colorado Territory
Territory of Kansas (1854–1861) preceded by unorganized territory of the original Louisiana Purchase. Part became the modern State of Kansas; the western part became part of the Colorado Territory.- Historic regions of the United States
Territory of Colorado (1861–1876) preceded by parts of the territories of Kansas, Utah, New Mexico and Nebraska; became the State of Colorado. (See also Jefferson Territory.)- Historic regions of the United States
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The Territory of Nebraska was an organized incorporated territory of the United States that existed from May 30, 1854, until March 1, 1867, when the final extent of the territory was admitted to the Union as the State of Nebraska.
The Colorado Territory was formed February 28, 1861 from portions of the territory south of 41° N and west of 102°03′ W (25° W of Washington, D.C.) (an area that includes present-day Fort Collins, Greeley and the portions of Boulder north of Baseline Road, in addition to portions of Kansas Territory, New Mexico Territory, and Utah Territory).