Debunking Atun-Shei's Nonsense on the American Civil War

Atun-Shei believes the invasion of a sovereign nation, the Confederate States of America, by the United States isn't aggression, but fails to articulate why. Prepare to be agitated. The only way one can moralize an unprovoked invasion is through deliberately misinterpreting the facts surrounding the American Civil War to make the war about the end of slavery in the United States.