President james k. polk campaigned on a platform of westward expansion. how much did he live up to that promise during his presidency?
a. the united states grew by about a third.

b. the united states lost territory.

c. the united states added a small amount of territory.

d. the united states remained about the same.

A

Explanation:

The United States grew under the direction of James Knox Polk, the 11th president. throughout his mandate as president, the United States annexed Texas, The Oregon Territory, and gained significant areas due to Mexico's defeat in the Mexican American war, this area being known as the Mexican Cession which included the present day states of California, Nevada, and Arizona amongst many others.

the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.