For God's sake, there were fewer than 400,000 slave holders in the entire country. If 300,000 of them were fighting for the Union then who the hell was fighting for the Confederacy???
Did you miss the part where I said I was not sure that those numbers were correct? I think you did. However please keep in mind that 70-80% of southern soldiers were not slave owners. The Northern hero Grant owned slaves while Lee did not.
Non slave owners were most of the soldiers who fought for the CSA. Along with tens of thousands of black men, in completely integrated units - unlike the Federal units that did not permit black men to fight with them.
You are welcome to your history (sic). We will keep ours. I never had to explain to my sons why the South fought. The’ve met enough Yankees to know why we fought.