Ft. Sumter was already under siege. A siege is an act of war. An attempt to resupply it, with orders to fire if interfered with is not an “invasion”. The confederates wanted a war, and they got one. You can string individual facts into a scenario where the south was an aggrieved victim, the Union was the aggressor, and slavery had nothing to do with the war, but it’s bogus.
I hereby will take my advice from my first post on the thread and save any further breath on the subject.
It seems that your education is at risk by further discussion.
You should be more careful of your urges to post.