Or this:
"We recognize the negro as God and God's Book and God's Law in nature tells us to recognize him - our inferior, fitted expressly for servitude. Freedom only injures the slave. The innate stamp of inferiority is beyond the reach of change. You cannot transform the negro into anything one-tenth as useful or as good as what slavery enables him to be." -- Jefferson Davis, March 1861
Or this:
"...its corner-stone rests, upon the great truth that the negro is not equal to the white man; that slavery subordination to the superior race is his natural and normal condition. This, our new government, is the first, in the history of the world, based upon this great physical, philosophical, and moral truth." -- Alexander Stephens, March 1861
or this:
" Considering the relation of master and slave, controlled by humane laws and influenced by Christianity and an enlightened public sentiment, as the best that can exist between the white and black races while intermingled as at present in this country, I would deprecate any sudden disturbance of that relation unless it be necessary to avert a greater calamity to both." -- Robert Lee, January 1865
Both northern states and southern states have histories of slave ownership.
In fact, of the original 13 states, 13 of them were slave states.
If you study either the United States Constitution or the Confederate States Constitution you will find they both enshrined slavery.
And during the time of the CSA, both the CSA and USA presidents took oaths to uphold their nations’ pro-slavery constitutions. It is a fact. Look it up.