Why was the United Stares interest in claiming the Pacific Northwest?

The United States had a strong interest in claiming the Pacific Northwest because of its strategic location and valuable natural resources. Control of the region would provide access to valuable fur trade routes, as well as potential trading opportunities with Asia. Additionally, the United States was expanding westward and saw the Pacific Northwest as a key area for further expansion and development. Control of the region would also help to secure the United States' borders and protect its interests in North America.