[IrishBrigade]

but the fight was over states rights.

again, read the Articles of Secession, principally those of Georgia, Mississippi, South Carolina, Texas, and Virginia...hint, count the number of times slavery is mentioned in each...

[Balding_Eagle]

For those of us who don’t want to argue the issue, is slavery mentioned a lot, or a little?

[DarkSavant]

Many States seceded over slavery

The Union declared war to "preserve the Union"

The Union allowed their slave states to keep slaves during the war.