The Fugitive Slave Act upset many Northerners because
they wanted it to be stricter.
it required them to allow slavery in free states
it forced them to support the recapture of escaped enslaved persons.

C. It forced them to support the recapture of escaped enslaved persons.

Explanation: The North was in heavy opposition to slavery. The Fugitive slave act made it so that any escaped slave ( whether they were in a free state or not) could be captured and returned into slavery, when beforehand if a slave entered a free state they were free.

I really hope this helps!

answer; /// i believe that they became successful farmers; ///////////////

all of the