Answer:
He belief that political authority should rest with the people themselves is called: popular sovereignty .
Step-by-step explanation:
Popular sovereignty, also termed settler sovereignty, in U.S. archives, a provocative political theory according to which the personalities of federal provinces should choose for themselves whether their provinces would enroll the Union as vacant or slave states.
Popular sovereignty is the system that the government of a state and its administration are formed and maintained by the permission of its people, through their elected representatives.