The creation of the territory was part of the Compromise of 1850 that sought to preserve the balance of power between slave and free states. The creation of the Utah Territory was partially the result of the petition sent by the Mormon pioneers who had settled in the valley of the Great Salt Lake starting in 1847. S. The Mormon settlers had drafted a constitution in 1849 and Deseret had become the de facto government in the Great Basin by the time of the creation of the Utah Territory. Following the organization of the territory, Young was inaugurated as its first governor on February 3,1851, in the first session of the territorial legislature in September, the legislature adopted all the laws and ordinances previously enacted by the General Assembly of the State of Deseret. In 1861, partly as a result of this, the Nevada Territory was created out of the part of the territory. Non-Mormons also entered the easternmost part of the territory during the Pikes Peak Gold Rush, in 1861 a large portion of the eastern area of the territory was reorganized as part of the newly created Colorado Territory. Territories that encompassed land that would become part of the Territory of Utah, Mexican Cession,1848 State of Deseret
Image: Utah territory coat of arms (illustrated, 1876)
Image: Flag of Utah (1903 1913)
The Utah Territory upon its creation. Modern state boundaries are shown for reference.