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  2. Oregon boundary dispute - Wikipedia

    en.wikipedia.org/wiki/Oregon_boundary_dispute

    The Oregon Country/Columbia District stretched from 42°N to 54°40′N. The most heavily disputed portion is highlighted. The Oregon boundary dispute or the Oregon Question was a 19th-century territorial dispute over the political division of the Pacific Northwest of North America between several nations that had competing territorial and commercial aspirations in the region.

  3. Greater Idaho movement - Wikipedia

    en.wikipedia.org/wiki/Greater_Idaho_movement

    The Greater Idaho movement is an effort in the United States for counties east of the Oregon Cascades [ 1 ] to secede from the state of Oregon and join Idaho. [ 2 ][ 3 ][ 4 ] It is primarily led by conservative dissatisfaction with the liberal lean of Oregon, driven by Portland and other cities in the north-western part of the state; proponents ...

  4. Oregon Treaty - Wikipedia

    en.wikipedia.org/wiki/Oregon_Treaty

    The Oregon Treaty [a] was a treaty between the United Kingdom and the United States that was signed on June 15, 1846, in Washington, D.C. The treaty brought an end to the Oregon boundary dispute by settling competing American and British claims to the Oregon Country; the area had been jointly occupied by both Britain and the U.S. since the Treaty of 1818.

  5. Columbia River - Wikipedia

    en.wikipedia.org/wiki/Columbia_River

    The Columbia River became much of the border between the U.S. territories of Oregon and Washington. [96] Oregon became a U.S. state in 1859, while Washington later entered into the Union in 1889. By the turn of the 20th century, the difficulty of navigating the Columbia was seen as an impediment to the economic development of the Inland Empire ...

  6. Geography of Washington (state) - Wikipedia

    en.wikipedia.org/.../Geography_of_Washington_(state)

    Geography of Washington (state) Washington is the northwesternmost state of the contiguous United States. It borders Idaho to the east, bounded mostly by the meridian running north from the confluence of the Snake River and Clearwater River (about 117°02'23" west), except for the southernmost section where the border follows the Snake River.

  7. Columbia River Estuary - Wikipedia

    en.wikipedia.org/wiki/Columbia_River_Estuary

    46.2536° N, 124.0585° W. The Columbia River Estuary is situated on the OregonWashington border and the Pacific Coast of the United States. It was traditionally inhabited by the Chinook Native Americans and discovered by settlers in 1788. The Estuary plays host to a plethora of species of marine and terrestrial flora and fauna, and ...

  8. Oregon Territory - Wikipedia

    en.wikipedia.org/wiki/Oregon_Territory

    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. [9] 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.

  9. U.S. Route 97 in Oregon - Wikipedia

    en.wikipedia.org/wiki/U.S._Route_97_in_Oregon

    U.S. Route 97 (US 97) in the U.S. state of Oregon is a major north–south United States highway which runs from the California border, south of Klamath Falls, to the Washington border on the Columbia River, between Biggs Junction, Oregon and Maryhill, Washington. Other than the northernmost stretch (which is known as the Sherman Highway), US ...