...the government of Great Britain "that the Oregon territory shall be divided between the two countries by the forty[-]ninth parallel of north latitude, from the Rocky Mountains to the Pacific Ocean; offering at the same time to make free to Great Britain any port or ports on Vancouver's...

...August, 1844, the British plea tentiary offered to divide the Oregon territory by the forty-ninth par of north latitude, from the Rocky mountains to the point of its inte tion with the northeasternmost branch of tie Columbia river, and th down that river to the sea...