The District of Louisiana, or Louisiana District, was an official and temporary United States government designation for the portion of the Louisiana Purchase that had not been organized into the Territory of Orleans or "Orleans Territory". The district officially existed from March 10, 1804, until July 4, 1805, when it was organized as the Louisiana Territory.
The Territory of Missouri was an organized incorporated territory of the United States that existed from June 4, 1812, until August 10, 1821. In 1819, the Territory of Arkansas was created from a portion of its southern area. In 1821, a southeastern portion of the territory was admitted to the Union as the State of Missouri, and the rest became unorganized territory for several years.
The territory of the United States and its overseas possessions has evolved over time, from the colonial era to the present day. It includes formally organized territories, proposed and failed states, unrecognized breakaway states, international and interstate purchases, cessions, and land grants, and historical military departments and administrative districts. The last section lists informal regions from American vernacular geography known by popular nicknames and linked by geographical, cultural, or economic similarities, some of which are still in use today.
The Pembina Region, also referred to as the Pembina District and Pembina Department, is the historic name of an unorganized territory of land that was ceded to the United States in 1818. The area included the portions of what became the States of Minnesota, North Dakota, and South Dakota lying within the Hudson Bay drainage basin. The area included settlements in the Pembina River area. The region was formerly part of British Rupert's Land, granted by British royal charter to the Hudson's Bay Company. After the Selkirk Concession and establishment of the agricultural Red River Colony in 1812, the area was governed as the District of Assiniboia. The Treaty of 1818 de jure transferred the region south of the 49th parallel to the United States from the British. Settlements south of the boundary continued to be de facto administered as part of Assiniboia until at least 1823.
The following outline is provided as an overview of and topical guide to the U.S. state of Iowa.
The following outline is provided as an overview of and topical guide to the U.S. state of Montana:
The following outline is provided as an overview of and topical guide to the U.S. state of Kansas:
The following outline is provided as an overview of and topical guide to the U.S. state of Nebraska:
The following outline is provided as an overview of and topical guide to the U.S. state of North Dakota:
The following outline is provided as an overview of and topical guide to the U.S. state of Oklahoma:
The following outline is provided as an overview of and topical guide to South Dakota:
The following outline is provided as an overview of, and a topical guide to, the U.S. state of Wisconsin:
The following outline is provided as an overview of and topical guide to the U.S. state of Wyoming:
The area currently occupied by the U.S. State of New Mexico has undergone numerous changes in occupancy and territorial claims and designations. This geographic chronology traces the territorial evolution of New Mexico.
The following outline traces the territorial evolution of the U.S. State of Wyoming.
The following chronology traces the territorial evolution of the U.S. State of Montana.
The following timeline traces the territorial evolution of California, the thirty-first state admitted to the United States of America, including the process of removing Indigenous Peoples from their native lands, or restricting them to reservations.
The following outline traces the territorial evolution of the U.S. State of North Dakota.
The following outline traces the territorial evolution of the U.S. State of South Dakota.
