Some British agents from Canada helped to arm Native Americans in the west. This helped them fight off enemies.
Answer:
Increase the size of the country (the United States)
Explanation:
The Northwest Ordinance led in creating of five new states under the Northwest Territory. The five states included Indiana, Ohio, Michigan, Illinois, and Wisconsin.
The Louisiana Purchase led to the beginning of the westward expansion, allowed settlers to settle in the West.
Both the settlements, the Northwest Territory and the Louisiana Purchase, related to the land. Both allowed the United States to occupy wast land towards the West.
Although there are numerous factors that can affect a counties GDP, especially today when the entire world is so "connected", a major reason why GDP fluctuates so much in this part of the world is that these economies rely primary on agriculture, which can be profitable one year and then not profitable the next, due to weather changes.
The Answer is in fact D. After the attack on Pearl Harbor the U.S. declared war on the Axis Powers, not just Japan.