The correct response is:
It encouraged them to settle as much of the Pacific Northwest as possible in order to claim it.
The Treaty of Ghent, which ended the War of 1812 between the United States and Great Britain, ultimately led to improved relations between the two nations. This improvement set the stage for future cooperation, particularly in the settlement and development of the Pacific Northwest. The establishment of boundaries and the agreement on issues arising from the war encouraged further exploration and settlement in that region.