The creation of the Minnesota Territory was the only official political change in the trans-Mississippi West east of the continental divide in this decade. However, this period did see the beginning of a movement to create a new territory which would see fruition in the 1850s.
With the increased emigration of Americans to Oregon Country and California beginning in the 1830s, there was concern in Washington of the need for the development of the lands through which the emigrants would have to pass on their way from the Mississippi River to the Rockies. The necessity of a military presence for protection, a formal government structure for laws, and settlers to help feed and house the emigrants made it evident that a new territory was needed across the midsection of the vast Indian Territory which had been created in 1834.
Go to next blog in this series, on political developments in the 1850s.