The correct answer is:
C. Honey Springs
The Battle of Honey Springs (July 17, 1863), was an American Civil War engagement and an important victory for Union forces in their efforts to gain control of the Indian Territory. It is known to be the largest confrontation between Union and Confederate forces in the area that would eventually become Oklahoma.
American settlers started moving west because they wanted a better life, a big factor of settlers moving west was also for land since it was very cheap, also gold and mining opportunities.
Between 1775 and 1787, the Western territories faced several challenges, including a lack of roads and competition with Native Americans for land and hunting grounds.
The answer should be A. Great Depression.