Why was the fugitive slave act added to to compromise of 1850

Following increased pressure from Southern politicians, Congress passed a revised Fugitive Slave Act in 1850. Part of Henry Clay's famed Compromise of 1850—a group of bills that helped quiet early calls for Southern secession—this new law forcibly compelled citizens to assist in the capture of runaway slaves.

the answer is c. hope this

which time period is this? or is this story fictional, i'm going to need more info to answer this question