Champagne is a French sparkling wine. The term Champagne can be used as a generic term for sparkling wine, but in the EU and some countries it is illegal to label any product Champagne unless it came from the Champagne wine region of France and is produced under the rules of the appellation.

Crémant is a group of sparkling wines made with the same technique as Champagne, but from outside the Champagne region. … There is a group of sparkling wines that will satisfy your desire for high quality bubbly. Crémant employs labor-intensive secondary bottle fermentation, as does Champagne