I have no idea of what that was supposed to say or mean.Don't know where you studied US History but the Union could have used force to abolish slavery at any given time. The war was about Confederate states trying to flex their muscles concerning state's rights. Slavery, which of course was an abomination, was just the scapegoat/rallying cry of that war. The Northern states could insist on moral indignation over slavery because their more industrialized economy was not conducive to slave labor, so it wasn't in their financial best interest to start a war to free the slaves. If it were not for the misguided southern hard headedness slavery as an institution may have continued for some time.