What two factors encouraged the pax to happen?

The Pax Romana, or Roman Peace, was encouraged by the stability brought about by strong centralized governance and military strength, which deterred external threats and internal strife. Additionally, the extensive network of roads and trade routes facilitated economic prosperity and cultural exchange, fostering a sense of unity and peace across the vast Roman Empire. These factors combined to create an environment where commerce and culture could thrive without the frequent disruptions of war.