Final answer:
The reign is mostly characterized by Political Stability.
Step-by-step explanation:
The correct option that mostly characterized the reign is Political Stability. Political stability refers to the ability of a government or a ruling party to maintain a consistent and predictable system of governance, with little or no political turmoil or instability. During a period of political stability, a ruler or a ruling party is able to effectively govern and implement policies, which can lead to positive economic outcomes, social cohesion, and military strength. While the other options, such as Economic Prosperity, Social Equality, and Military Weakness, may have been present to some extent, they were not the primary characteristic of the reign.