3. Which event was the final straw for the South that led directly to secession? A. Lincoln's election to the presidency
B. Comprises that worked like the Kansas-Nebraska Act
C. John Brown's raid on Harper's Ferry
D. The Dred Scott Supreme Court decision

Why didn’t the united states participate in the league of nations? the u.s. senate did not want the country to join. president wilson did not want the country to join. the league of nations was only for european countries. the league of nations had failed to prevent world war 1