Beograd Travel on It also introduced the idea of popular sovereignty, which permitted the residents of each territory to decide for themselves whether to be admitted as slave or free. While the purpose of the Compromise was to quiet the debate, it swelled the abolitionist movement in the North. No longer did Northerners merely have to tolerate slavery; now they were forced to assist in arresting their runaway slave neighbors and returning them to slavery. In 1854, the Kansas-Nebraska Act permitted those territories to decide for themselves whether to be admitted as slave or free. The debate soon turned into a bloody war as abolitionists and slaveholders, primarily from Missouri, used violence, intimidation, and murder to take control of the territory. Southerners, who were already on the defensive now that they were outnumbered in Congress, relied on the Supreme Court to assert their demands for expanding slavery. In 1857, the U. Beograd Travel 2016.