

I don’t think so. Of course it’s hard to predict what Europe will look like in 100 years, but I’d like to image the EU more as a service provider for its member states. Maybe the military will be combined and the economy is already very much linked together which will increase. But I don’t think the member states will cease to exist as sovereign nations. Europe is far more diverse not only in language but also in culture. That is in my opinion a strong feature of the union as it is a union in diversity.
It is available, but unlike in the US it is not something you would find in almost every household. And I would bet you it would be easier to find an individual who hasn’t tried peanut butter even once than finding someone who has.