For fifty years, the Roman Empire was a revolving door of "Barracks Emperors"—generals who were declared emperors by their troops only to be murdered months later. The empire faced a "perfect storm" of disasters:
The transition from the Severan dynasty to the reign of Constantine the Great marks one of the most transformative periods in human history. It is the story of an empire that nearly collapsed under its own weight, only to be reinvented as a bureaucratic, militarized, and eventually Christian state. The Severan Dynasty: The Soldier-Emperors (193–235 AD) The Roman Empire from Severus to Constantine
The Cyprian Plague decimated the workforce and the army. For fifty years, the Roman Empire was a