So now it's 40 years and not 20? Shall we try for 60 or 80?
IF slavery was abolished because of the Civil War then pray tell why did it still bloody well exist in this nation afterward? It existed in many forms until economical conditions made it a liability that's way. That war did not end it but rather only destroyed a regional economy which was the purpose of it to start with.
to let it die it's death would have ended it much quicker as technology and development would not have been delayed for decades post war south. That was the most humane way to end it and it worked in the north BEFORE the Civil War now did it or did it very well not?
The northern industrialist wanted it ended then and there for their economical reasons and not because of a soft spot in their hearts either or a matter of conscience either. That came later in the history books when Marxist re-wrote American History in our schools to be more politically correct. Abe was the man to do it for them.