premise: To make the geography (if not the choice) simpler, we've divided the country into just five Paris and its vicinity (known to the French as the Ile-de-France); the Northeast (Picardy, Champagne-Ardennes, Lorraine, Alsace, Burgundy, and the Jura); the Northwest (Normandy, Brittany, and the Loire Valley); the Southeast (Savoie, the Rhone Valley, Provence, the Cete d'Azur, and Corsica); and the South?­west (Berry-Limousin, P??rigord, the Atlantic Coast, the Pyr???­n??es, and Languedoc-Roussillon).
hypothesis: The Northeast of the country has particularly mountainous terrain.