Nobody had declared war when Pearl Harbor was bombed, yet I doubt anyone would have disputed that it was indeed an act of war.
The other point I was making was that this first "shot" did not justify the deaths of 600 000 people / the destruction of Dixie homes nor the subjugation of the Southron people & the reversal of their independence.
The south fired on the U.S. garrison in Sumter, and continued firing until they were forced to surrender. What about that did not justify the Union response?
When the North declared independence from Britain (with significant help form the South) it was celebrated as freedom. When the CSA did essentially the SAME THING -as a continuation of the secessionist revolution started in 1776
When the founding father's declared their independence in 1776 one thing that they knew for sure was that they would have to fight for it. Since, by your own admission, the confederate actions were viturally the same thing, then the fact that their actions were opposed should be no cause for complaint on your part. The major difference being, of course, that the confederacy lost.