Actually, you don't know history and you are wrong in your assertions. Here's just one example of the Mississippi secession document. The other states have similar documents:
Confederate States of America - Mississippi Secession
A Declaration of the Immediate Causes which Induce and Justify the Secession of the State of Mississippi from the Federal Union.
In the momentous step which our State has taken of dissolving its connection with the government of which we so long formed a part, it is but just that we should declare the prominent reasons which have induced our course.
Our position is thoroughly identified with the institution of slavery-- the greatest material interest of the world. Its labor supplies the product which constitutes by far the largest and most important portions of commerce of the earth. These products are peculiar to the climate verging on the tropical regions, and by an imperious law of nature, none but the black race can bear exposure to the tropical sun. These products have become necessities of the world, and a blow at slavery is a blow at commerce and civilization. That blow has been long aimed at the institution, and was at the point of reaching its consummation. There was no choice left us but submission to the mandates of abolition, or a dissolution of the Union, whose principles had been subverted to work out our ruin.
Ah, but lets dissect that. And give it CONTEXT! (note, I say context, and always have, not ethics nor morality)
Our position is thoroughly identified with the institution of slavery
As it should be, it's the basis of the economy at large. Cheap labor (ahem...which we convieniently still do as a country, we just send it to third world countries...sovereign entities of their own with international legal rights...what do you bright tards who got your Harvard and Yale Business degrees and made your millions think will happen once we send them enough of our IP (and I don't mean Disney IP) that they don't "need" Apple anymore outside of a brand...you dumb dumb fools...gave away the house for a shiny bean.)
the greatest material interest of the world.
Yes, labor is the greatest expense and liability of any business currently, and certainly more so back then.
Its labor supplies the product which constitutes by far the largest and most important portions of commerce of the earth. These products are peculiar to the climate verging on the tropical regions, and by an imperious law of nature, none but the black race can bear exposure to the tropical sun.
While inaccurate, it isn't exactly racist. My daughter has a rather high melanin count, and frankly, after a few days at Disney, she doesn't need sun tan lotion anymore. She's tanned up and ready to go. I'm in the same boat, though I don't get as dark, but I keep my tan for months. It is scientific and factual that those with greater melanin have less instances of skin cancer and are less likely to suffer from sunburn.
And, when planning a workforce, at that time, it makes sense and is a valid argument (though an inaccurate one).
These products have become necessities of the world, and a blow at slavery is a blow at commerce and civilization.
This is completely accurate, considering the economic landscape of the time. Again, not racist. Just accurate.
That blow has been long aimed at the institution, and was at the point of reaching its consummation.
Ah, the conceding the moral point. As that is what it was. The issue was largely never about "what is best for the black man", the issue was "we as white people feel guilty about something we do not understand, but due to religious reasons, we think is wrong". I am VASTLY paraphrasing here, but most of the abolitionist movement came from Protestant doctrines (not Anglican or Catholic).
Again, read with context.
There was no choice left us but submission to the mandates of abolition, or a dissolution of the Union, whose principles had been subverted to work out our ruin.
Everything stated, however abhorrent (and it is), is strictly economically based. Slavery was PART of the economics. Earlier "cheese" was made as an example, but a good modern example (and a crappy one ethically and morally) would be that there was a ban on tractors.
And, before I get flame after flame, READ what I wrote.
So, that said. Show me where it's "racist" please? Assuming you can apply context, and not flare up with your latest google find.