Translate the following English sentence to French:
"A conference, sponsored by the 'Automobile Club d' Italia', was held in Naples and attended by leading lawyers, because insurance companies, as was also the case in the past, are making Italian citizens pay different premiums according to where they live, claiming that they have to recoup their costs in the areas where there are a greater number of accidents."
Un congrès s' est tenu à Naples, sous l' égide de l' Automobile Club d' Italia, en présence de grands juristes, car il est arrivé et il arrive que les compagnies d' assurance fassent payer des primes diverses aux citoyens italiens en fonction du lieu où ils résident, soutenant que ces derniers doivent se rembourser pour les dépenses liées aux lieux où le nombre de sinistres est plus élevé.