What was the political system of the Persian empire under Darius?

Under Darius I, the Persian Empire utilized a centralized administrative system that divided the empire into satrapies, or provinces, each governed by a satrap (governor). This system allowed for efficient tax collection, local governance, and the maintenance of order. Darius also established a network of roads and a postal system to facilitate communication and control throughout the vast empire. His rule emphasized a balance between local autonomy and centralized authority, promoting stability and integration across diverse cultures.