Ancient Gaul was a region in Western Europe, inhabited by Celtic tribes, before the Roman conquest. There are various synonyms for the term Ancient Gaul, such as pre-Roman Gaul, Celtic Gaul, and Gallic territory. Pre-Roman Gaul is a term used to indicate the region before the Roman Empire annexed it. Celtic Gaul is a phrase often used in reference to the Celts who were the predominant tribe in the area. Gallic territory is another synonym that is commonly used to describe the area that was inhabited by the Gauls. All these synonyms are used interchangeably to refer to the same geographical region that is rich in history and culture.