??? I can not imagine why Lincoln lied that some people wanted to destroy the union. The “union” would have continued on as it has, albeit without as many states. This is the Big Lie and the reason it was not a “civil” war. The southern states wanted only to be left alone and to go their own way. They wanted to “destroy” nothing.
The Southern Democrats in 1860, just like in 2000 and again in 2016, refused to accept the results of the election. No more, no less. They were just a whole lot dumber about how they went about it.