Who owned the Oregon Territory before the Oregon Treaty of 1846 ceded the Pacific Northwest to the U. S.? A) Spain and Mexico
B) Britain
C) Russia
D) Britain and the United States

D) Britain and the United States.

Explanation: The land was shared by both countries before the Oregon Treaty of 1846.

answer; /// slavery should be outlawed in the new country, was part of the initial draft of the declaration of independence, but not part of the final