Isn't it a fact that Lincoln had to issue a executive order to free the slaves prove the Civil War was not about slaves.?

The Emancipation Proclamation was a political maneuver by Lincoln to weaken the South, increase Union Army troops and sway European support away from the Confederacy to the Union.

.....no.

No. And in fact, all the governors of the states that seceded wrote many letters, newspaper articles and made speeches that said the American Civil War WAS about slavery. Many of those documents still exist and you can read them for yourself. The Library of Congress has archived them, and many state museums also have them. So get out and go read them for yourself. Then come back and admit you screwed up.

No, but your question proves that you're a dumbass.

Uh...nope.

When FDR issued his formal announcement that only unconditional surrender would be acceptable from the Germans, Italians and Japanese, did he have to do that so that we would understand who we were at war with?

Only those who want to apologize for the stupidity and treason of the confederacy try to claim the war wasn't about slavery, child.

How does that prove anything?? It was about Union & not slaves. The vast majority of Union soldiers joined to preserve the Union. But slavery was the underlying issue. The rich plantation owners sent a lot of young men to their deaths to preserve it.