Hi all. I'm playing a campaign with Rome. When I conquer a region, I haven't the liberate option. At least, not for all factions. Example: I conquer Philippopolis, ancient capital of Bessi (or Triballi, I don't remember). I want to free them, but there is no options. Only sack, raze, occupy or looting. What's wrong? I want more client or vassal states, but without this option the faction are disappearing. I've only one option: to provoke a rebellion, but this way is too longer and I want an ally, not an opponent.

Any solution? Thanks!