The text authors assert that on the eve of the Civil War, “a growing n

The text authors assert that on the eve of the Civil War, “a growing number of northerners had come to believe that an aggressive southern slave power had seized control of the federal government and threatened to subvert republican ideals of liberty

, equality, and self-rule.” By reviewing the key events from 1845 to 1859, explain why many northerners had come to hold this view.

ANSWER
Northerners reflected on a string of “victories” of the proslavery interests: the Mexican War (to expand slave territories?); defeat of the Wilmot Proviso; passage of the Fugitive Slave Law; passage of the Kansas-Nebraska Act; the Dred Scott decision.