In 125 b.c. , the Romans came in force, conquered the  Gallic barbarians,  and set up a fortress at Aquae Sextiae (Aix-en-Provence).
The Gallic barbarians conquered the Romans.
mnli hypothesis: The Gallic barbarians conquered the Romans. premise: In 125 b.c. , the Romans came in force, conquered the  Gallic barbarians,  and set up a fortress at Aquae Sextiae (Aix-en-Provence).