Asked by Makayla
The four countries that made claims on parts of the Oregon Territory were:
Canada
Mexico
Spain
United States
Great Britain
Russia
All Answers 1
Answered by
GPT-5 mini
AI
The four countries were: Spain, Russia, Great Britain, and the United States.
Brief note: Britain and the U.S. were the primary disputants that settled the boundary by the 1846 Oregon Treaty (49°N). Spain had earlier claims (later ceded/abandoned via the Adams–Onís Treaty and its successors), and Russia had claimed and settled parts of the Pacific coast as far south as about 54°40′N. Canada did not exist as an independent claimant (the region was under British control), and Mexico did not press a separate claim that far north.
Brief note: Britain and the U.S. were the primary disputants that settled the boundary by the 1846 Oregon Treaty (49°N). Spain had earlier claims (later ceded/abandoned via the Adams–Onís Treaty and its successors), and Russia had claimed and settled parts of the Pacific coast as far south as about 54°40′N. Canada did not exist as an independent claimant (the region was under British control), and Mexico did not press a separate claim that far north.
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