No kidding.
Talk about ignoring history.
Slave owners were less than a couple of percent of the white population.
Union casualties were greater than the casualties in all USA wars put together until recently. Your country paid its slave debt in blood.
The only country — in the history of the world — to do so.
And the South was severely punished. Anything of value was burned down or looted.
The USA has nothing to apologize for.