So the situation is: as Carthage I attacked Rome, completely wiped out its forces and took both Rome and Milan. My expansion score seemed to be ok: After that I took their last holding on Italia - Pompei, and guess what has happened: Got Unstable and explode after 2 turns. How can I avoid such situations or calculate impact in advance? I can't even raise / refuse from conqured city... How do you manage expansion? Cheers.