I'm not really familiar with the US Civil War, the things I remember about it there was two sides, the North and the South, the North won am I correct ? Yeah that's true that people with conflicting morals tend to make that that compromises end up badly.
I think we should see religion as an evolving ans changing thing, since for example in the Old Testament there was things like you can kill your own children if they misbehave, nowadays most of people would consider that being morally wrong (but some people still kill their own children sadly) and also that most of the religions are really old and when for example when the Old Testament was written people viewed the world and many thing differently..I think religions should adapt their things that they fit in the modern society and I read from somewhere that the reason why the Old Testament bans eating pork was that there were some bacteria and a parasite called trichina that could kill you.
In Finland there's also a "separation of church and state" thing.
I find religions really fascinating haha.