If the Roman Republic was a chaotic, argumentative city-state, the Roman Empire was a cold, efficient machine. After the civil wars that destroyed the Republic, Augustus Caesar ushered in the Pax Romana—two centuries of relative peace. But this "peace" wasn't a gift; it was a state-sponsored product of massive engineering, constant surveillance, and the systematic integration of conquered peoples. Welcome to Day 9: The Pax Romana (Engineering, Infrastructure, & Control). This zero-prep, high-i