After unifing china why did shi haungdi divide the country into military districts?

After unifying China, Shi Huangdi divided the country into military districts to ensure efficient governance and maintain control over the vast territory. This administrative division allowed for better management of resources, troop deployment, and enforcement of laws. By centralizing authority within these districts, Shi Huangdi aimed to suppress potential rebellions and consolidate his power, facilitating the establishment of a strong, centralized state. This strategy also helped in the integration of diverse cultures and regions under a unified Chinese identity.