Your fellow pro-Confederate, DiogenesLamp, does not share your view.
He has posted many times he thinks the Confederacy woulda', coulda', shoulda' taken over most Union states & territories had Lincoln not fought back.
central_va: "The fact that you actually believe this fairy tale means you are stupid, a liar, have and agenda OR PERHAPS ALL THREE."
You might ask DiogenesLamp why he shares my view, not yours.
My view is that the Confederacy absolutely represented an existential threat not only in 11 states of the Lower & Upper South, but also immediately in five more Border States, at least three territories (Oklahoma, New Mexico & Arizona), and, if Confederates controlled the Mississippi River, then pretty much all Midwestern states.
So, central_va tells us Confederates never wanted to "conquer" the USA, but there is no possible way to deny they wanted as much of it as they could grab.
As for "stupid", "liar" or "agenda", I plead innocent.
My "agenda" is simple historical truth, a concept that seems quite foreign to many Lost Causers.
central_va: "I will PAY anyone to find one contemporary reference that even mentions that as a real possibility.
I know because I've looked and still look for it while doing research."
You can't find it because you're looking for the wrong thing.
"Conquer the North" is not what the Confederacy was about.
But further reducing or effectively destroying the Union was certainly within what they thought possible.
Why else do you suppose Confederates declared Kentucky & Missouri to be Confederate states?
Ask DiogenesLamp.
Here's one vision of what the Confederate Empire might look like: