The correct answer is A. A lack of strong leaders after Marcus Aurelius
Explanation:
The Pax Romana (27BCE to 180CE) was a historical period in the Roman Empire in which there was peace, stability, and prosperity as during this time economy thrived and the Roman Empire reached its peak in terms of territory. This period began with Caesar Augustus in the power, who implemented different policies that ended with the civil wars and conflicts in the empire and make it prosperous, most of these politics were preserved by five emperors after Caesar Augustus who were called the "Five Good Emperors"; however after the death of the last emperor (Marcus Aurelius) most of the emperors created their own politics and this led to instability, wars, and conflicts that ended with the Pax Romana. Therefore, the Pax Romana began to weaken due to a lack of strong leaders after Marcus Aurelius.
