In 1967, Insee, in relation with the National Economic Planning Agency and the DATAR (Delegation for Territorial Planning and Regional Action) split the territory into eight major Zones for Study and Development (ZEAT) :
PARIS REGION - Ile de France ;
PARIS BASIN - Burgundy, Centre, Champagne-Ardenne, Lower and Upper Normandy, Picardie ;
NORTH - Nord Pas-de-Calais ;
EAST - Alsace, Franche-Comté, Lorraine ;
WEST - Brittany, Pays de la Loire, Poitou-Charentes ;
SOUTH-WEST - Aquitaine, Limousin, Midi-Pyrénées ;
CENTRE-EAST - Auvergne, Rhône-Alpes ;
MEDITERRANEAN - Languedoc-Roussillon, Provence-Alpes-Côte d'Azur, Corsica.
This division, created during the big territorial planning phase, is still used sometimes.
At European level, the division into ZEAT corresponds to level 1 of NUTS (nomenclature of units for territorial statistics).