Map of the Montana Territory, 1879
Map showing North American territorial boundaries leading up to the American Revolution and the founding of the United States: British claims are indicated in red and pink, while Spanish claims are in orange and yellow.
Map showing mid 17th century claims and land grant boundaries. Some colonies seen here are: Nova Scotia (NSc), Territory of Sagadahock (TS), First Province of Maine (Me), New Hampshire (NH), Plymouth (PC), Massachusetts Bay (MBC), New Netherland (NN), New Sweden (NSw), and Lord Baltimore's Land (Md; Maryland)
Map of the Montana Territory, 1879
New World settlements of The Netherlands, collectively called New Netherland
The Massachusetts Bay Colony
French settlements and forts in the so-called Illinois Country, 1763, which encompassed parts of the modern day states of Illinois, Missouri, Indiana and Kentucky)
de Lacy's 1865 map of the Montana Territory
A 1775 map of the German Coast, a historical region of present-day Louisiana located above New Orleans on the eastern bank of the Mississippi River
de Lacy's 1872 map of the Montana Territory
Vandalia was the name of a proposed British colony located south of the Ohio River, primarily in what is now the U.S. states of West Virginia and eastern Kentucky
A proposal for the creation of Westsylvania was largely deterred by the Revolutionary War
National Atlas map of United States territorial acquisitions
Seward's Folly. The controversial purchase of Alaska from Russia in 1867 turned out to be a great deal for the U.S. when the area proved to contain a treasure trove of natural resources.
The Oregon Country. The dispute over Oregon, between Britain and the U.S., led to an uneasy, parallel governing of the territory for almost 30 years.
Progression of the Indian Territory separation from the Arkansaw Territory, 1819–1836
Indiana lands acquired through treaties
The first state cessions. The 13 original states ceded their western claims to the federal government, allowing for the creation of the country's first western territories and states.
The Northwest Territory was a large and (at times) ill-defined territory ceded by Great Britain to the U.S. at the end of the Revolutionary War. British troops still occupied parts of the area well past 1800.
United States territorial expansion since 1803, maps by William R. Shepherd (1923)
Census Bureau map depicting territorial acquisitions and effective dates of statehood
The Ohio Country, indicating battle sites between settlers and Native American Tribes, 1775–1794
Selected tract purchases of western New York State
Map of the Ohio Lands
Oklahoma Territory and Indian Territory, along with No Man's Land (also known as the Oklahoma Panhandle). The division of the two territories is shown with a heavy purple line. Together, these three areas would become the State of Oklahoma in 1907.
Pennsylvania land purchases from Native Americans
Post-Civil War military districts were set up to aid in the repatriation process of the southern states during Reconstruction.
The Panama Canal Zone was once a territory of the United States
The boundaries of the State of Deseret, as proposed in 1849
Animated map of secession and repatriation of the Confederacy, 1860–1870
The proposed State of Superior. The red areas show the counties of the Upper Peninsula that are generally accepted as being part of the proposed state. The pink areas show the counties of the "expanded" proposal.
The failed State of Lincoln, with its proposed 1868 boundaries
The Philippines was a commonwealth of the United States, 1935–1946
Worldwide location of current U.S. insular areas:
The Commonwealth of Puerto Rico

The Territory of Montana was an organized incorporated territory of the United States that existed from May 26, 1864, until November 8, 1889, when it was admitted as the 41st state in the Union as the state of Montana.

- Montana Territory

Territory of Montana (1864–1889) became the State of Montana.

- Historic regions of the United States
Map of the Montana Territory, 1879

2 related topics

Alpha

Idaho Territory

Seal of the Idaho Territory, 1863–1866
Entrance to the Old Penitentiary
Old Washington Territory{{mdash}}and the portions ceded to Nebraska Territory on March 2, 1861, and to Idaho Territory in 1863.
The Idaho Territory in 1863
Areas ceded to the Montana and Dakota Territories in 1864
The Idaho, Montana, and Wyoming Territories in 1868

The Territory of Idaho was an organized incorporated territory of the United States that existed from March 3, 1863, until July 3, 1890, when the final extent of the territory was admitted to the Union as Idaho.

In 1864, the Montana Territory was organized from the northeastern section of the territory east of the Bitterroot Range.

Dakota Territory

Historical coat of arms of the Dakota Territory (illustrated in 1876)
Map of the Dakota Territory, c. 1886

The Territory of Dakota was an organized incorporated territory of the United States that existed from March 2, 1861, until November 2, 1889, when the final extent of the reduced territory was split and admitted to the Union as the states of North Dakota and South Dakota.

A small patch of land known as "Lost Dakota" existed as a remote exclave of Dakota Territory until it became part of Gallatin County, Montana Territory, in 1873.