No, the denial is an absolute Leftist lie. The Democrat party of 1840 and 1860 and 1910 is not the Democrat party of today. The same goes for the Republicans. They have each changed considerably. The lie is that secession was "about" slavery. Plainly it was not. It was about tariffs and economics and more broadly, the centralization of power.
Those are absolute, complete lies.
Democrat lies.
Southern Democrat lies.
Lies told by Southern Democrats who pretend now to be "conservative Republicans".
You're not a Republican of any kind, you're still a GD Democrat, and you will be one until you stop lying about the Civil War, period.
Confederates told us why they seceded, and it was all about slavery, it had little or nothing to do with any of that other nonsense you Democrats keep lying about.
Read the documents!
But of course you have read them, and you still lie about them, which confirms absolutely your status as a GD Democrat, Southern Democrat Lost Causer.
And Democrats, by definition, were never "conservative" they've always been opposed to the United States and our Constitution.
And from time to time you Democrats go berserk and wage war against us -- all the while lying, lying, lying.
That's the definition of Democrat.