But by the middle of the 1820s, only the American and British claims were still valid. In 1818, the two governments decided to allow their inhabitants to live in Oregon under a "joint occupancy" that would remain until 1846.
A significant portion of the Pacific Northwest of North America known as Oregon Country, or Columbia District, was the focus of a protracted dispute between the United States and the United Kingdom in the early 19th century. The territory covered by the Treaty of 1818 was located west of the Rocky Mountains all the way to the Pacific Ocean, east to the Continental Divide, and north of 42°N latitude and south of 54°40′N latitude. Article III of the 1818 contract provided unrestricted navigation for all mercantile traffic, granted shared control to both countries for ten years, and authorized land claims. Both nations, however, disagreed with the international agreement's provisions. The British used the name Columbia, whereas Americans used Oregon Country.
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