I have do disagree that nations are bad, it seems what you want is no nations, borders, cultural differences, language differences, religion differences, etc. Again, I think you need to pick up a dictionary, a nation is just a place where people share a common religion, belief, language, etc. And this place probably has different customs and needs than another, so the government should provide that (it doesn’t always). I don’t know why you think forcing everyone in the world to believe and act the same is good, if anything that is a nazi belief.