The Kansas Nebraska act upset many northern because

It would bring slavery into the north and cause a huge battleground.

Explanation:

It would open the North to slavery. Northerners were outraged. In an era that would come to be known as "Bleeding Kansas," the territory would become a battleground over the slavery question. The reaction from the North was immediate.

thanos obviously donald trump aint got nothin on thanos

protect u.s. businesses from competition