The War of 1812 contributed to the growth of the United States by including new states because the reduction of British aid to Native Americans near the Mississippi River made white settlement easier.
ans is The reduction of British aid to Native Americans near the Mississippi River made white settlement easier.
Explanation:
from a previous ans on brainly:
1- During the War of 1812, many native tribes collaborated with the British in exchange for economic aid and resources.
With the British defeat, the natives, who had been the main contenders of the Americans in the fighting (losing 10,000 men) were weakened in their position in their territories, to such an extent that those territories were effectively occupied and organized by representatives of the U.S.
A term coined by Raphael Lemkin in his 1944 book Axis Rule in Occupied Europe. Likely based off of the Holocaust and his personal experience with the Armenian massacres