>You can’t be serious, that you think that the US has more differences than a whole continent made out of twice as many people living in 50 countries

You keep saying "countries" like it matters, like it's different to a "state" in any way other than legal. In the US states have their own laws, and are part of the federal US which has overbearing laws. In the EU, countries have their own laws and are part of the federal EU, which has overbearing laws.

Take this as an example - the Scandinavian countries are Denmark, Finland and Sweden. The West Coast states are California, Seattle and Oregon.

I'll tell you now that there is MASSIVELY more cultural diversity in those three US states than there is in the Scandinavian countries.

The differences between California and Mississipi, for example, are very large, just like the differences between France and Bulgaria.

You seem to be assuming that Europe has far more differences than the US, but you don't seem to state why. They all (well, most) have different languages, sure - but CULTURALLY they are very close together. And from a legal point of view and from a tax point of view, there is a LOT of congruence in Europe that does not exist in the US.

>I don’t even know why all people from the US really want to believe that their state is sooo different from the others

California -> Mississipi is truly, unbelievable different. California is about as good as it gets in the modern world, Mississipi is pretty much third world.

>the US, and it’s all more or less the same, the difference are minimal against differences between whole countries.

I'm sorry, I just can't agree with this. I've lived in the UK, the US, France and spent time working in Eastern Europe. Financially, culturally, legally there is a lot of uniformity across the EU.

I wouldn't want to say which (EU or US) has more disparity - but once you ignore language, those differences are very comparable.