But it didn't spring from nothing. And then the settled tribes continued warring with each other. I guarantee you haven't. Even in Britain, which has had enormous mingling of people, you can see clearly the distinction between the Cornish and their neighbours. Feel free to tell an Albanian in Finland that he's just one of the guys. Or tell a Sami that he's Greek. Or tell the real Macedonians that the guys called Macedonians today are the real Macedonians. Modern countries working together for economic benefit. Big deal. Groups working together for mutual benefit is nothing new. There's a type of ant in Indonesia which farms these little bugs that collect due from leaves. The ants actually carry them around to new leaves and such. Heck, feel free to call the EU its own country if you want, since it may end up going that way. But that doesn't miraculously eradicate the distinct tribes within that region.