Which four provinces did Augustus create in Roman Gaul?

The emperor Augustus reorganized Transalpine Gaul into four distinct administrative provinces to improve governance. These four provinces were:12

• Narbonensis: Located along the Mediterranean coast, this region was governed as a senatorial province.32
• Lugdunensis: Also known as Celtica, this province featured Lugdunum (modern-day Lyon) as its capital.31
• Aquitania: Situated in the southwest, bordered by the Pyrenees and the Bay of Biscay.31
• Belgica: Located in the north, with major centers at Trier and Reims.31

Together, Lugdunensis, Aquitania, and Belgica were collectively referred to as Gallia Comata, which were ruled as imperial provinces under the authority of legates.32