Answer
The Pax Romana, the famed era of relative peace and prosperity in the Roman Empire, reached its end with the solo rule of Commodus. This period, lasting from 96 to 180 AD, was marked by territorial expansion, economic growth, and cultural flourishing. However, the assassination of Commodus' father, the wise Emperor Marcus Aurelius, in 180 AD, brought Commodus to power and signaled the beginning of the empire's decline.