Did the Kansas Nebraska Act support the Missouri Compromise of 1850?

Answer 1

No. The effect of the Kansas-Nebraska Act (1854) was to supersede (nullify) the Missouri Compromise, rendering it inapplicable to future states. The geographical division was not applied, but rather "popular sovereignty" within a state would decide the issue of slavery there. This resulted in internecine warfare in the states of Kansas and Missouri, and murderous attacks by both sides (abolitionists and pro-slavery).

The Missouri Compromise (1820) was never actually repealed per se.

Answer 2

The Kansas-Nebraska Act nullified the Missouri Compromise of 1850. The new act left the decision on whether a state would be a free state or a slave state to the voters of the territory near to being a new US state. The one part of the Missouri Compromise that was not effected by the Kansas-Nebraska Act was the Fugitive Slave law.