I made the generalization since the EU and UK make the generalizations, codify them into law, and spread them in trade agreements (see [1]). That includes with the USA, which has 683 registered foods/drinks in the EU register [2].
Without the rules on what is and isn't Champagne or Napa Valley wine, we can be sure manufacturers would be putting the label on other products to deceive purchasers.
That’s is what I’m referring to. There are specific rules and expectations that exist in some places, but neither these laws nor the associated consumer expectations are global in scope.
Re: Champaign: it was long used as a descriptor of a style of wine in the US and consumers are familiar with that usage here. And to this day, it is still used that way on wines that are on the shelf, and aren’t made in France at all. Politically, there were some concessions made, but it wasn’t anything to do with consumer protections.
Without the rules on what is and isn't Champagne or Napa Valley wine, we can be sure manufacturers would be putting the label on other products to deceive purchasers.
[1] https://agriculture.ec.europa.eu/news/new-geographical-indic...
[2] https://www.tmdn.org/giview/gi/search