No, Alexander Stephens tells us that slavery was the primary reason for the existence of the CSA and a few weeks after he said that, the CSA attacked Fort Sumter.
I didn't know that Alexander Stephens was voted President of the Universe. He was entitled to say anything he wished, but for whatever reason they created the CSA, the point remains that they had a right to do so under the principle articulated in the Declaration of Independence. You know, the principle that created the USA?