USA HISTORY

Detailed explanation-1: -It established the British-American boundary at the 49th parallel (except Vancouver Island). With the end of joint occupancy, the region south of the 49th parallel became Oregon Territory in the United States while the northern portion became part of the British colonies of British Columbia and Vancouver Island.

Detailed explanation-2: -The Oregon Territory, 1846 Originally Spain, Great Britain, Russia, and the United States claimed the territory. In 1819, under terms of the Transcontinental Treaty, Spain ceded its claims to the territory to the United States.

Detailed explanation-3: -The United States and Great Britain signed the Treaty of Oregon on June 15, 1846, ending 28 years of joint occupancy of the Pacific Northwest.

Detailed explanation-4: -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.

Detailed explanation-5: -Albert Gallatin, representing the United States, offered Britain navigation rights on the Columbia River as compensation for American control of all land south of the forty-ninth parallel. Politicians in both nations rejected all proffered divisions of Oregon.