Explain why the number of U.S. settlers helped to finalize the border between the U.S. and Britain in the Pacific Northwest (PNW).(4 points)
1. The number of U.S. settlers in the Pacific Northwest increased the U.S. government's interest in asserting control over the region.
2. The settlers put pressure on the U.S. government to negotiate a definitive border with Britain to avoid conflict and ensure their safety and rights in the region.
3. The presence of a large population of U.S. settlers also strengthened the U.S. government's bargaining power in negotiations with Britain over the border.
4. Ultimately, the number of U.S. settlers in the Pacific Northwest contributed to the formalization of the border between the U.S. and Britain in the region.