You're answer would be "<span>widespread slavery"
Hope this helps. c:</span>
Answer:
The secession of South Carolina was followed by the secession of six more states—Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas–and the threat of secession by four more—Virginia, Arkansas, Tennessee, and North Carolina. These eleven states eventually formed the Confederate States of America.
Because the were undefeated during the war of 1812 so the answer its most likey A. Declared victory