Answer:
The Fugitive Slave Acts were a pair of federal laws that allowed for the capture and return of runaway enslaved people within the territory of the United States. ... The Fugitive Slave Acts were among the most controversial laws of the early 19th century
The issue of slavery caused tension between the North and the South. ... Abolitionists believed that slavery was unjust and should be abolished immediately. Many Northerners who opposed slavery took a less extreme position. Some Northern workers and immigrants opposed slavery because it was an economic threat to them.