It is easy to fell in love with the Roman empire. It involved near the totality of the “Known World”. If we bring it to the XIX century, it can be compared to the biggest empire ever, the British. In a world were the highest speed was a sailboat or a galloping horse, how could the Romans run that empire. My analysis is based on the behavior of the people. Is it possible to control by force that massive portion of land? No, it is not. The Romans approach, in some provinces, were more political than military. Rome was prosper. In an era were fight was in every corner, must of the times associated with civil war, Rome offered the Pax Romana (Roman Peace), were business and commercial relations were stimulated. European people from the II century could not imagine a world without Rome. I am not saying that there was no crime in the Roman empire, not at all, the banditry was a big problem. But war between tribesmen was less common. People always prefer peace and stability. Despite the cruel Roman approach to insubordination and the struggle for power in the city of Rome, the political apparatus was stabler than the previous political model of tribe and clan. In my point of view, the Pax Romana was one of the pillars of the Roman economic prosperity. The Roman iron fist was better than endless war.