According to the libs, the US was WORSE, luring in states, while not telling them that it was forever, and that trying to leave would led to teh deaths of hundreds of thousands.
I have no idea what "libs" you are citing, but the fact is that any faction in any region of any nation unilaterally declaring that they are their own nation does not make them a nation, and no real nation or international authority ever recognizes them as such.
Does a nation have the right to defend itself, particularly on their own territory? Indeed!
President Lincoln, as President of the United States, defended the United States within the United States.
He was President of the
United States. That sovereign nation called the United States is shown below: