Why did the fugitive slave act anger northerners? a) it contradicted the missouri compromise. b) it increased federal intervention in the affairs of independent states. c)it contradicted the wilmot proviso. d) it prioritized states rights over the rights of the federal government.

The answer is b) It increased federal intervention in the affairs of independent states.

By the time these federal Acts were enacted in the U.S., several Northern states had already abolished slavery but it was legal in the Southern states. The Fugitive Slave Acts of 1793 and 1850 allowed for the capture and return of runaway slaves within the territory of the United States, aiming to prevent that the Northern states would become safe havens for runaway slaves.

The last act was more rigid in their provision and stated more regulation, including the guarantee of harsher punishments for anyone interfering in runaways slave's capture, the right of slave owners and their “agents” to search for escaped slaves within the borders of free states and compelled citizens to assist in their capture as well. It also denied slaves the right to a jury trial, among others.

The Fugitive Slave Act of 1850 implied much government's intervention in the state's affairs, and this angered most northern states. They responded by intentionally neglecting the law or creating acts that nullified or that protected black people, the so-called "personal liberty laws", and by making great efforts to assist runaway slaves, among others.

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