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Date |
Event(s) |
| 1 | 1843 | - 1843—1848: Provisional OR Government
Provisional Oregon Government
|
| 2 | 1845 | - 11 Jan 1845: Wasco County Formed
Formed from the parts of Clackamas, Lane, Linn and Marion counties, that were east of the Cascade Range.
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| 3 | 1846 | - 15 Jun 1846: Oregon Country Formed
49th parallel became border between United States and Great Britain.
|
| 4 | 1847 | - 28 Dec 1847: Linn County Forrmed
Created from the southern portion of Champoeg County.
|
| 5 | 1848 | - 14 Aug 1848—14 Feb 1859: Oregon Territory
Oregon Territorial Government
|
| 6 | 1851 | - 29 Jan 1851: Lane County Formed
Created from the Southern part of Linn County and the part of Benton County east of Umpqua County.
|
| 7 | 1853 | - 1853: Washington Territory Formed
created from Oregon territory to include land north of the Columbia river and east of the Snake river.
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| 8 | 1859 | - 14 Feb 1859: OR State Formed
Oregon accepted into the United States of America
|
| 9 | 1861 | - 12 Apr 1861—10 May 1865: United States Civil War
War between the Federal Government and the secessionist southern states.
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Bef 1925 - Yes, date unknown