The document discusses slavery, sectionalism, and secession in antebellum America. It provides context around political cartoons and speeches that addressed slavery. Key events that increased sectional tensions included the Kansas-Nebraska Act of 1854, the Dred Scott decision of 1857, and the election of Abraham Lincoln in 1860 which prompted seven southern states to secede and form the Confederate States of America. Further secessions followed Lincoln's call for troops after the attack on Fort Sumter.