How did the united states come to own the land on the west coast of north america

In 1819, the United States acquired the Spanish claims to the Pacific Northwest (as negotiated in the Nootka Convention) in the Adams-Onís Treaty. ... Americans continued arriving on the west coast of North America in significant numbers in the mid-1830s.

Explanation:

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special interest groups must step back and let the process work itself out a representative can amend it at several points in the congressional staffers must do homework and report to the floor on what they 've learned