Answer:
I think it was the totally hair Barbie.
Nullification is a legal theory that a state has the right to nullify, or invalidate, any federal law it deems unconstitutional. ... In "South Carolina Exposition and Protest", Calhoun argued that a state could veto any federal law that went beyond the enumerated powers and encroached upon the residual powers of the State.
He ordered them to invade Mexico in order to catch Pancha Villa, who had attacked a US city and killed soldiers and civilians. At the end, they never actually caught him.
1. Reconstruction
2. Healing wounds between the north and south, and fixing their damaged relationship
3. Slave policy
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