The Kansas-Nebraska Act was unpopular in northern states because
(A) it furthered the Missouri Compromise
(B) it could increase the number of slave states
(C) it created a transcontinental railroad in the south
(D) the northern states disapproved of Stephen Douglas seeking southern
support
(E) it weakened the infl uence of northern business interests
The Kansas-Nebraska Act was unpopular in northern states because "(B) it could increase the number of slave states," since it stated that the slavery issue in each new state would be decided by "popular sovereignty".