In an old thread i heard about the reason Rome couldn't become an European empire, because it was more Mediterranean oriented (or so i think).
For this reason, i would like to know what are the odds of a city state emerging in Gallia, and absorbing the civic greek traditions (and the etruscan technology) to evolve like Rome did.
I thought about Marseille having more profound contact with the Gallian mainland, or something like that, to have some uplifted celtic tribes to develop an urban tradition like the roman one. Is it plausible?