I'm not sure how you conclude that from even your quoted source: slavery, states' rights to own humans as property, and the westward expansion of slavery and sl

I'm not sure how you conclude that from even your quoted source: slavery, states' rights to own humans as property, and the westward expansion of slavery and slave-holding into the territories are all about slavery. Slavery was a root tension from the founding of the Republic with an earlier Civil War in the 1820's only staved off by the Missouri compromise. Since you are one of the top HN posters, I encourage you to read the founding documents and speeches of the Confederate States, as well as reputable historical works such as McPherson's "Battle Cry of Freedom".