The Adams-Onís Treaty, signed in 1819, primarily involved the United States and Spain. As a result of this treaty, Spain ceded its claims to the Oregon Territory, which allowed the U.S. to assert its claim over the region. Therefore, the countries that claimed the Oregon Territory following the treaty were primarily the United States and, prior to the treaty, Spain.
The United States, Great Britain, Spain, and Russia claimed the Oregon territory, in other words, the Oregon Country.
The United States, Great Britain, Spain, and Russia claimed the Oregon territory, in other words, the Oregon Country.
Britian, Russia, Spain and the United States all had competing claims to Oregon.
Russia,France,Great Brittian,and the United States
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U.S. and Britain
Prior to becoming U.S. territory, the Oregon Territory was claimed by several nations, primarily by Great Britain and the United States. The region was jointly occupied under the Oregon Treaty of 1846, which effectively settled the dispute between the two countries. Before that, it was inhabited by various Indigenous peoples and explored by European nations, including Spain and Russia. Ultimately, the United States took full control of the territory after the treaty.
The United States and Great Brittain -NovaNet
Russia, Spain, the United Kingdom, and the United States all claimed Oregon Country (Oregon territory). Spain and Russia eventually dropped out, then the UK and US decided to split the territory in half along the 49th parallel, which today makes up some of the border of the US and Canada.
The United States and Great Britain acquired Oregon country from Spain as the result of the Adams-Onis Treaty. Spain previously had claimed Oregon for 250 years.
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Before the United States, the Oregon Territory was claimed by several countries, including Spain, Russia, Great Britain, and the United States itself. Spain initially held the territory through the early 19th century but ceded its claims to the United States in the Adams-Onís Treaty of 1819. Great Britain and the United States both had competing claims, leading to the Oregon boundary dispute until the Oregon Treaty of 1846, which established the current U.S.-Canada border in that region. Thus, prior to U.S. ownership, it was primarily under British control.