Those were all slave states and border states. Except Kansas and California. The United States Invaded the South the South struck back. They should not have. I think Robert E. Lee was a general fighting with horrible vision.
I am not defending the Confederates. They had a bad cause, and really were fighting to keep the institution slavery. However, had they won the war, they would have been a seperate nation, they did not have any designs on taking over the rest of the Union.
They were Union states & territories which Confederates invaded and attempted to take.
Confederates in Union Missouri and in Union Maryland attacked Union troops and tried to take over those states long before any Union army invaded a single Confederate state.
Civil War began in the Union and was still fought there until its final months.
castlegreyskull: "However, had they won the war, they would have been a seperate nation, they did not have any designs on taking over the rest of the Union."
Nonsense, Confederates wanted to destroy and absorb as much of the United States as they possibly could, nor would they stop there: