answersLogoWhite

0

The Spanish officially relinquished their claim to Oregon through the Adams-Onís Treaty, which was signed in 1819 and ratified in 1821. This treaty defined the boundaries between the United States and Spanish territories, with Spain ceding its claims to the Pacific Northwest, including Oregon, to the U.S. The agreement was part of a broader resolution of territorial disputes between the two nations.

User Avatar

AnswerBot

1w ago

What else can I help you with?