some have chosen the conversion of the emperor Constantine to Christianity on his deathbed in 337 CE or the sack of the city in 410 CE by Alaric and his Visigoths. Mine ends with a culminating moment in 212 CE, when the emperor Caracalla took the step of making every single free inhabitant of the Roman Empire a full Roman citizen, eroding the difference between conqueror and conquered and completing a process of expanding the rights and privileges of Roman citizenship that had started almost a thousand years earlier.
