@jasonpaisley Their "state right" to keep slaves. 😑 The north was more industrial because it needed to figure out how to be more efficient due to paid labor. There were pockets of slavery in the north, but nothing like the slave industry of the south.
@FreedomATX There was a significant amount of slavery in southern Illinois because many of the residents there had migrated up from Kentucky and Tennessee. Makes Abraham Lincoln's ascent to power a bit more remarkable. @jasonpaisley