The document outlines several key events and issues that contributed to rising sectional tensions between the North and South leading up to the Civil War, including the Missouri Compromise of 1820, the Wilmot Proviso of 1846, the Compromise of 1850, the Kansas-Nebraska Act of 1854, the Dred Scott decision of 1857, and Abraham Lincoln's election in 1860, which prompted several Southern states to secede from the Union and form the Confederate States of America.