Premise: The Communauté de communes des Trois Rivières (before January 2017: "Communauté de communes du Pays des Trois Rivières") is a federation of municipalities ("communauté de communes") in the Aisne "département" and in the Hauts-de-France "region" of France.
Hypothesis: The Communauté de communes des Trois Rivières boasts the largest number of municipalities of any other similar federation in France