ScaredwhiteboyI don't give shit where it's made, it's champagne. Stop acting like a homosexual.
Appellation is actually a thing, a legally defined thing, based on geographical indication. Besides that there's a lengthy set of requirements specifying most aspects of the viticulture. This includes pruning, vineyard yield, the degree of pressing, and the time that wine must remain on its lees before bottling. All under the auspices of the CIVC.
Bottomline, champagne is only champagne when it comes from the champagne wine region and some prestigious frogs decide that it's worthy of the name. Otherwise it's just a fizzy drink, you may not care, other people do.