History was actually one of my stronger subjects throughout my years in school, thanks for reminding me. Also, I think it's stupendously ironic that you say "drop the snark", right after calling me "sport" and saying "it's called history, go learn some". It's almost like you have no sense of self awareness.
I was well aware that my reply was snarky. It would have been more civil if you replied to the points I raised in a civil manner.
Did you read those same excerpts of text that you copy/pasted, or did you just copy/paste them thinking they would make your point for you? Of the 3, only the Texas secession letter could justifiably be called "white supremacist" or racist. The first is a lament that the federal government is limiting and making efforts to remove their right to own slaves (which itself is not a racist idea, however sh***y it is). The second is a more general complaint about the federal government being too involved with things in the states as a whole, not just slavery. Neither of those are in any way racist or white supremacist.
I've read them many times.
The argument that the war was over state's rights versus the rights of the Federal government misses that the states rights the Confederate leadership was trying to protect, was the 'right' for states to determine whether or not its citizens could buy, own, and sell slaves, without federal interference. It was also feared that any new states added to the Union would be free rather than slave, increasing the power shift away from the Southern planter class and ensuring an end to the institution of slavery.
Slavery was far and away the primary cause of the American Civil War, and had been the most divisive issue in the country for decades leading up to it.
... Unless you're suggesting that the reason black people were used as slaves was because of racism (which I'm assuming is the case, since that seems to be the most popular statement I've seen). The problem with that is that it isn't even related to the Confederacy anymore when you go down that road, considering the history of slavery in the United States (and the colonies before they were united).
Unrelated, but why does nobody ever talk about the Egyptians or Romans when discussing slaves? It's always about the United States and the Confederacy. The Confederacy was a joke of a government not even recognized by the rest of the United States and lasted all of 4 years, whereas Egypt and Rome (both the Roman Republic and the Empire) were practically built by slaves, lasted absurdly long, and controlled massive portions of the continents they stemmed from (and in both of these particular empires, massive portions of other continents). And since people have mentioned the Nazis, what about the slave labor they left to the people detained in labor camps, or the forced labor of the "enemies of the state" in Soviet labor camps and gulags?
Racism was certainly used to justify African slavery once it existed. Read Alexander Stephens' cornerstone speech for an example. It was a common argument in defense of slavery in that era that nature (or God) had positioned one race as master and the other slave. The language used in that speech and in Texas' declaration of secession was common at that time.
People don't talk about Roman slavery because it is so far removed from the modern world that we aren't experiencing the repercussions of it. That isn't the case with African slavery and the American Civil War, both of which the modern world is still feeling the ripple effects from. It also quite frankly isn't relevant to a discussion on the Confederate flag or Apple's decision to ban it from their app store, while discussion of the American Civil War, African Slavery, or the Jim Crow era are.