Which of the following statements about the American political environment in the mid 1800s is FALSE?

I believe the answer is B.

Explanation:

That is, if the option choices are as follows: a. Most new territory added to the Union after 1850 would likely be slave states, which made the North nervous. b. Northerners felt slavery was an economic disadvantage to white people also. c. The anti-slavery movement in the North was gaining momentum in the second half of the 1800s. d. Compromises made by Congress to balance the power between slave states and free states were not working.

because it took place after the war of 1812 had come to an end.