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Territory of Oregon
Organized incorporated territory of the United States
Seal of the Oregon Territory of Oregon Territory

Seal of the Oregon Territory
Capital
Government
 • Type Organized incorporated territory
 • Motto Alis volat propriis
Governor  
• 1848–1850; 1853
 Joseph Lane
• 1850
 Kintzing Prichette
• 1850–1853
 John P. Gaines
• 1853–1854
 John W. Davis
• 1854–1859
 George L. Curry
History  
• Oregon Treaty
 June 15, 1846
• Organized
 August 14 1848
• Washington Territory split off
 March 2, 1853
February 14, 1859
Preceded by		 Succeeded by
Provisional Government of Oregon
Washington Territory
Oregon

The Territory of Oregon was an organized incorporated territory of the United States that existed from August 14, 1848, until February 14, 1859, when the southwestern portion of the territory was admitted to the Union as the State of Oregon. Originally claimed by several countries (see Oregon Country), the region was divided between the UK and the US in 1846. When established, the territory encompassed an area that included the current states of Oregon, Washington, and Idaho, as well as parts of Wyoming and Montana. The capital of the territory was first Oregon City, then Salem, followed briefly by Corvallis, then back to Salem, which became the state capital upon Oregon's admission to the Union.

Background

Main page: Oregon Country

Originally inhabited by Native Americans, the region that became the Oregon Territory was explored by Europeans first by sea. The first documented exploration came in 1777 by the Spanish, with British and American vessels visiting the region within a few years. Later, land based exploration by Alexander Mackenzie and the Lewis and Clark Expedition along with the establishment of the fur trade in the region set up a variety of conflicting territorial claims by European powers and the United States.

These conflicts led to several treaties, including the Treaty of 1818 that set up a "joint occupation" between the United States and the British over the region that included parts of the current U.S. states of Idaho, Oregon, Washington, Wyoming, and Montana as well as the Canadian province of British Columbia.

Formation

Wpdms oregon territory 1848
Oregon Territory, as originally organized, in 1848
Wpdms oregon washington territories 1853
Oregon Territory (blue) with Washington Territory (green) in 1853
Wpdms oregon washington territory 1859
State of Oregon (blue) with Washington Territory (green) in 1859

During the period of joint occupation, most activity in the region outside of the activities of the indigenous people came from the fur trade, which was dominated by the British Hudson's Bay Company. Over time, some trappers began to settle down in the area and began farming, and missionaries started to arrive in the 1830s. Some settlers also began arriving in the late 1830s, and covered wagons crossed the Oregon Trail beginning in 1841. At that time, no government existed in the Oregon Country, as no one nation held dominion over the territory.

A group of settlers in the Willamette Valley began meeting in 1841 to discuss organizing a government for the area. These earliest documented discussions, mostly concerning forming a government, were held in an early pioneer and Native American encampment and later town known as Champoeg, Oregon. These first Champoeg Meetings eventually led to further discussions, and in 1843 the creation of the Provisional Government of Oregon. In 1846, the Oregon boundary dispute between the U.S. and Britain was settled with the signing of the Oregon Treaty. The British gained sole possession of the land north of the 49th parallel and all of Vancouver Island, with the United States receiving the territory south of that line.

The United States federal government left their part of the region unorganized for two years until news of the Whitman massacre reached the United States Congress and helped to facilitate the organization of the region into a U.S. territory. On August 14, 1848, Congress passed the Act to Establish the Territorial Government of Oregon, which created what was officially the Territory of Oregon. The Territory of Oregon originally encompassed all of the present-day states of Idaho, Oregon and Washington, as well as those parts of present-day Montana and Wyoming west of the Continental Divide. Its southern border was the 42nd parallel north (the boundary of the Adams-Onis Treaty of 1819), and it extended north to the 49th parallel. Oregon City, Oregon, was designated as the first capital.

Gaining statehood

Oregon City served as the seat of government from 1848 to 1851, followed by Salem from 1851 to 1855. Corvallis served briefly as the capital in 1855, followed by a permanent return to Salem later that year. In 1853, the portion of the territory north of the lower Columbia River and north of the 46th parallel east of the river was organized into the Washington Territory. The Oregon Constitutional Convention was held in 1857 to draft a constitution in preparation for becoming a state, with the convention delegates approving the document in September, and then general populace approving the document in November.

On February 14, 1859, the territory entered the Union as the U.S. state of Oregon within its current boundaries. The remaining eastern portion of the territory (the portions in present-day southern Idaho and western Wyoming) was added to the Washington Territory.

Territorial evolution of Oregon

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