What is nullification?

Question

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the idea that a state had the right to cancel a federal law that the state considered to be unconstitutional.
the idea that states could apply their own tariffs on goods from Britian
the idea that the federal government could determine that a state government was in violation of the constitution
the idea that Congress could only implement a tariff if all of the states agreed to it.

Answer 1

Nullification is the idea that a state had the right to cancel a federal law that the state considered to be unconstitutional. This concept was most famously associated with the Nullification Crisis of the early 19th century, when South Carolina attempted to nullify federal tariffs.