The power of that Roman empire rested in its leaders‘ control of communications. The Mediterranean was their lake. Across their European empire, from Scotland to Syria, they pushed roads that 15 centuries later were still primary arteries of European transportation. Down those roads the emperor marched his armies. Up those roads he gathered his intelligence. The emperors invented the posts to move couriers and messages at the fastest possible speed.
Using that infrastructure, with respect to everything that involved the administration of power, the emperor made himself the best-informed person in the history of the world.
That power eradicated human freedom.