Anti-Nebraska movement
1854–55 American anti-slavery movement / From Wikipedia, the free encyclopedia
The Anti-Nebraska movement was a political alignment in the United States formed in opposition to the Kansas–Nebraska Act of 1854 and to its repeal of the Missouri Compromise provision forbidding slavery in U.S. territories north of latitude 36° 30' N. At the time, the name "Nebraska" could loosely refer to areas west of the Missouri River. The Republican Party grew out of the Anti-Nebraska movement.