Only 75% of the Southern population owned slaves! Now that that's been stated, slavery was LONG established well before the civil war. And finally, General Robert E. Lee opposed slavery and so did Stonewall Jackson. Nuff said
Ah.. I love statistics.. but thats SO wrong. 8 % of the southern population owned 1-4 black slaves.. another 8% were those big plantages owners which had more (so
16% slave owners in the south). There were even some hundrets of free-black man in the south, which owned slaves too!
Beside that, most Union Generals and staff had slaves to serve them! General Sherman had many slaves that served him until after the war was over and did not free them until late in 1865.
Also don't forget, that the Union had slave states too...