The Organic Act for the Territory of New Mexico was part of the Compromise of 1850, passed September 9, 1850. Primarily concerned with slavery, the act organized New Mexico as a territory, with boundaries including the areas now embraced in New Mexico, Arizona, and southern Colorado.
Territorial organic acts have included (in chronological order):
The Colorado Organic Act, 1861, created the Territory of Colorado out of eastern Utah Territory, western Kansas Territory, southwestern Nebraska Territory, and a small portion of northeastern New Mexico Territory
The District of Columbia Organic Act of 1871, amalgamated Anacostia, Georgetown and Tenley Town to the City of Washington; and consolidated the County of Washington, City of Washington and District of Columbia into one governmental unit
The Guam Organic Act of 1950, codified Guam as an unincorporated territory and established civilian government ending Guam's administration by the U.S. Navy.