Explain the nullification crisis of south carolina

The Nullification Crisis was a United States political crisis in 1832–1837, during the presidency of Andrew Jackson, which involved a conflict between South Carolina and the government. It declared that the tariffs of both 1828 and 1832 were unconstitutional and unenforceable in South Carolina. ... Congress passed the new negotiated tariff satisfactory to South Carolina. The South Carolina convention reconvened and repealed its tariffNullification Ordinance on March 11, 1833.

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if i am correct the answer is going to be a) the federal program of reconstruction ended.

england is crowded cold and polluted while north america was like the opposite