This comment seems confused. In English, "the Americas" isn't a continent nor are North America and South America "sub-continents"; rather, North America is a continent, South America is a continent, "the Americas" refers unambiguously to the collection of both continents, and "America" refers unambiguously to the United States of America (and "American" refers unambiguously to a US citizen). The only chauvinism occurs when speakers of other languages insist that the English language adopt their model of continents and the corresponding toponyms and demonyms (for example, many Spanish speakers use "Americano" to refer to inhabitants of the Americas, and since that word looks like "American" in English, many of these Spanish speakers believe English speakers should modify the meaning of "American" to mirror their "Americano").
Using "Europe" to refer to the EU member states in English is different because "Europe" in English traditionally refers to the entire continent and referring to the EU as "Europe" introduces ambiguity. I don't think this ambiguity is a significant problem and I wouldn't call it "chauvinism" but perhaps I could be convinced otherwise.
Using "Europe" to refer to the EU member states in English is different because "Europe" in English traditionally refers to the entire continent and referring to the EU as "Europe" introduces ambiguity. I don't think this ambiguity is a significant problem and I wouldn't call it "chauvinism" but perhaps I could be convinced otherwise.