What was the most important reason why abolitionism become more radical after 1850?

The Fugitive Slave Act of 1850 required people in free states to help capture and return escaped enslaved people, and it denied alleged fugitives important legal protections. Its enforcement brought slavery directly into many Northerners’ lives and outraged people who had previously been less involved in abolitionism. This made the movement more radical, so the best choice is “Because the Fugitive Slave Act angered many Northerners.”

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