Why did John C. Calhoun resign as vice president?
A. to lead the fight against the Tariff of 1832
B. to oppose the Doctrine of Nullification
C. to prevent South Carolina from leaving the Union

a

Explanation:

The crisis came to a head in 1832 when a new tariff law was proposed. Although the bill actually lowered the rates on import taxes from the 1828 level, the South still considered it harmful. John C. Calhoun resigned as vice president to help lead the fight against the tariff as a senator from South Carolina. Even with the Southern opposition to the tariff, the bill was passed.

This is part of my assignment.

no because we were not ready for war

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.