Fort Sumter is in South Carolina you know. So how exactly did the eviction of the Union trespassers at Fort Sumter threaten the US Federal Government? The CSA was no threat to Washington. They wanted to leave it, not destroy it.
Fort Sumter was a Federal Fort when it was fired upon. This still constitutes as an attack on the Federal Government. You don’t “evict” the Federal Government with the firing of weapons; that was an act of war.
So bombarding the crap out of a place for over 24 hours is defined as 'eviction'? Really?
The South started the war. The South lost the war. Cry me a river.
Ft Sumter was not on South Carolina soil. Where is was had never been South Carolina soil. Rather it was built on a shoal, and its foundations were provided by granite shipped from MA and NY, at the expense of the US government.