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Answer:
State's rights and slavery
Explanation:
Although not the first crisis that dealt with state authority over perceived unconstitutional infringements on its sovereignty, the Nullification Crisis represented a pivotal moment in American history as this is the first time tensions between state and federal authority almost led to a civil war.
It provided all people in a given state the right to vote. ... It changed the two-party system to a three-party system. It meant that Native Americans could own slaves in any state.
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