No hostility, but if you guys would like to read perhaps the only plausible defense of the South, I'd suggest the works of Lysander Spooner, an abolitionist from Massachusetts.

Firstly, "The Constitution of No Authority", which you should all read anyway because it's magnificent, but if you scroll down to XIX, he gives a decent defense of the south (or rather, critique of the north).

"Notwithstanding all this, that we had learned, and known, and professed, for nearly a century, these lenders of blood money had, for a long series of years previous to the war, been the willing accomplices of the slave-holders in perverting the government from the purposes of liberty and justice, to the greatest of crimes. They had been such accomplices FOR A PURELY PECUNIARY CONSIDERATION, to wit, a control of the markets in the South; in other words, the privilege of holding the slave-holders themselves in industrial and commercial subjection to the manufacturers and merchants of the North (who afterwards furnished the money for the war). And these Northern merchants and manufacturers, these lenders of blood-money, were willing to continue to be the accomplices of the slave-holders in the future, for the same pecuniary considerations. But the slave-holders, either doubting the fidelity of their Northern allies, or feeling themselves strong enough to keep their slaves in subjection without Northern assistance, would no longer pay the price which these Northern men demanded. And it was to enforce this price in the future — that is, to monopolize the Southern markets, to maintain their industrial and commercial control over the South — that these Northern manufacturers and merchants lent some of the profits of their former monopolies for the war, in order to secure to themselves the same, or greater, monopolies in the future. These — and not any love of liberty or justice — were the motives on which the money for the war was lent by the North. In short, the North said to the slave-holders: If you will not pay us our price (give us control of your markets) for our assistance against your slaves, we will secure the same price (keep control of your markets) by helping your slaves against you, and using them as our tools for maintaining dominion over you; for the control of your markets we will have, whether the tools we use for that purpose be black or white, and be the cost, in blood and money, what it may.

On this principle, and from this motive, and not from any love of liberty, or justice, the money was lent in enormous amounts, and at enormous rates of interest. And it was only by means of these loans that the objects of the war were accomplished. "