What was the immediate cause of the secession of southern states from the Union prior to the start of the Civil War? DA. the presidential election of Abraham Lincoln O B. the passage of the Kansas-Nebraska Act C. John Brown's raid on Harpers Ferry D. the Supreme Court decision in the Dred Scott Case

What was the immediate cause of the secession of southern states from the Union prior to the start of the Civil War? DA. the presidential election of Abraham Lincoln O B. the passage of the Kansas-Nebraska Act C. John Brown's raid on Harpers Ferry D. the Supreme Court decision in the Dred Scott Case