Explain what nullification refers to and note two prominent examples of nullification politics in american history.

Nullification is a legal theory that a state has the right to invalidate, any federal law which that it deems unconstitutional with respect to the United States Constitution. An example is when South Carolina adopted the ordinance to nullify the tariff acts and label them unconstitutional. During the Civil War  several states threatened or attempted nullification of various federal laws

an earnest tone.

because portia wants to know why brutus has been acting strange lately.

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.