I don't see why "western civilization" should be a relevant category for a technology release. You're leaving the EU out, yes, and that's relevant in itself. I don't get why leaving X% of western civilization or not would add anything to it.

(Btw, I consider latinamerica to be mostly part of western civilization...eastern europe too, so the EU is much less than 50%. However, people that care about the term usually prefer to exclude non white people for some reason)