Outline of Washington territorial evolution
The following outline traces the territorial evolution of the U.S. State of Washington.
Outline
- Historical international territory in the present State of Washington:
- *Oregon Country, 1818-1846
- **Anglo-American Convention of 1818
- **Provisional Government of Oregon, 1843-1849
- **Oregon Treaty of 1846
- Historical political divisions of the United States in the present State of Washington:
- *Unorganized territory created by the Oregon Treaty, 1846-1848
- *Territory of Oregon, 1848-1859
- *Territory of Washington, 1853-1889
- *State of Washington since 1889