The answer I think lies in the Federalist papers. That is that the Union is necessary but would have happened anyway without war. Going to war over succession, seems like a husband murdering his wife who wants to leave him. It seems unjustified. And that is even if it is better for the family to stick together. The South wanted to leave the Union. Was that just cause for murdering the South? [I forget the exact numbers but counting both sides it reaches close to a million. That murdering the South also seems like a violation of human rights. After all does not murder take away most rights of the victim (except burial)?
