And when the confederacy was proclaimed it went out of it's way to include in its constitution protection of the institution of slavery and the very slave trade that you profess to condemn. But, of course; you knew that, too.
Let's not change the subject. The Union was passionately involved in, and was gleefully enjoying the profits from being slavers long before the Confederacy existed.
For the Union to have then, much less carry on to this day, that they were the opponents of slavery, or of superior morality, is absolutely laughable.
The North, the Union was both favorable to slavery, and to an all powerful, centralized, federal government.
As all peoples throughout history have enslaved others, this is hardly a shame that only the Union should bear; it is a shame shared by all humanity.
However; unlike the Union, the South stood aginst socialism.