The secession of Southern States led to the establishment of the Confederacy and ultimately the Civil War. It was the most serious secession movement in the United States and was defeated when the Union armies defeated the Confederate armies in the Civil War, 1861-65. Hope this helps, good luck! :)
Divided
Ben Franklin made a political cartoon saying "Join or Die" trying to get the 13 colonies to unite together because they were so divided
The Southerners opposed industry because their main revenue came from exported crash crops grown in plantations. The Southerners saw no need to incorporate industry since they thought it would not be useful at all.
B The largest number of African Americans who settled in the west
Abolitionists have prevented opponents from explaining their reasonable counterpoints