A. The Nullification Crisis led to the promotion of federal power over states' rights.
It was actually outlined in the constitution that states could nullify laws, etc., they deemed that were wrong. However, when South Carolina decided to nullify a law, Andrew Jackson put a stop to it, causing the crisis and almost starting the war then and there. When, prior to the event, states still had a substantial amount of power, President Jackson's response caused states' rights to diminish under the authority of the federal government.
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Answer:
In an attempt to improve their condition, farmers in the 1870s decided to organize. ... Working within existing political parties, farmers attempted to bring about political change. They managed to gain control of several state legislatures and to enact state laws which regulated railroads.
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