The Last Battle of the civil War
To say your statement or question were true would indicate that the civil war was all about slavery.
There are to many different schools of thought on what was the cause of the civil war.
Personally i do not believe that in the south the overall thought was we are fighting to keep slavery. I think is was about here goes the federal gov. taking away more of the rights of the states. Several of the New England States stated they would withdraw from the Union simply on that matter if in fact that was what Lincoln was trying to do.