The proposal of the Kansas-Nebraska Act

a
in effect broke the Missouri Compromise
b
drove many proslavery settlers out of the Kansas Territory
c
became a peaceful compromise to the slave question in those territories
d
proved Abraham Lincoln could compete with Stephen Douglas in a campaign

1 answer

The correct answer is:

a. in effect broke the Missouri Compromise

The Kansas-Nebraska Act, passed in 1854, allowed the territories of Kansas and Nebraska to decide for themselves whether to allow slavery within their borders through the principle of popular sovereignty. This effectively nullified the Missouri Compromise, which had previously prohibited slavery in those territories north of the latitude 36°30′.