The following outline traces the territorial evolution of the U.S. state of Oregon.

Outline

Historical territorial claims of Spain in the present state of Oregon:

• Nueva California, 1768–1804

• Gran Cuenca, 1776–1821

• Alta California, 1804–1821

• Adams-Onis Treaty of 1819

Historical international territory in the present state of Oregon:

Oregon Country, 1818–1846

• Anglo-American Convention of 1818

• Provisional Government of Oregon (extralegal), 1843–1849

• Oregon Treaty of 1846

Historical political divisions of the United States in the present state of Oregon:

• Unorganized territory created by the Oregon Treaty, 1846–1848

Territory of Oregon, 1848–1859

• Oregon Organic Act, August 14, 1848

• Northern portion of Oregon Territory incorporated in new Washington Territory, March 2, 1853

• State of Deseret (extralegal), 1849–1850

State of Oregon since 1859

• Oregon Statehood Act, February 14, 1859 (Eastern portion of territory transferred to Territory of Washington)

See also

• Historical outline of Oregon

• History of Oregon

• Territorial evolution of the United States

• Territorial evolution of California

• Territorial evolution of Idaho

• Territorial evolution of Nevada

• Territorial evolution of Washington

References

External links

State of Oregon website

• Oregon Blue Book: Oregon History

Oregon Historical Society

• Oregon History Project