Why are you concentrating on politics when there are so many more people who would call themselves Catholic, Protestant, Christian and Muslim before they would call themselves Americans, French, Iranian?
These political and geographical concepts are fairly new to a world that has known the various religious institutions, some into antiquity.
Who are you asking?
The person whose post precedes mine. Sorry I thought I quoted him. I hope I read that properly. That was my take on his meaning, anyway.