What was the calhoun doctrine?

he pressed for states rights in the case of slavery.
he wanted states to have the right to nullify national laws.
he tried to enforce national laws over states rights.
he supported the increased tariffs to promote industries in his home state.

the federalist party which advocated strong centralization dominated the united states government till 1800. so 1800 election transformed the power from one party to another party for the first time and was thus a turning point in american history. so jefferson called it "revolution of 1800".

explanation: