The south designed itself to hurt itself, because the slave power eschewed free labor for slave.
"Philadelphia newspapers quoted a speech by Senator Herschel V. Johnson of Georgia in their city. "We believe that capital should own labor; is there any doubt that there must be a laboring class everywhere? In all countries and under every form of social organization there must be a laboring class -- a class of men who get their living from the sweat of their brow; and then there must be another class that controls and directs the capital of the country. He pleaded: "Slave property stands upon the same footing as all other descriptions of property."
--"Abraham Lincoln, Vol. II, Prairie Years, by Carl Sandburg pp.217-22
Walt
Well that's a non-response. Try again, Walt.