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.
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.
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.
10
1914
28 Jul 1914—11 Nov 1918: World War One World War fought in Europe
11
1917
6 Apr 1917: U.S. Enters WWI United States declares war on the Central Powers (Germany, Austria-Hungry)
12
1939
1 Sep 1939—2 Sep 1945: World War Two war fought on a global scale between the Axis Powers (Germany, Italy, Japan) and the Allied nations (U.S., France, Great Britain)
13
1941
7 Dec 1941: Attack on Pearl Harbor Japan attacks U.S. Pacific Fleet at Pearl Harbor Hawaii. United States declares war on Japan and Germany.