Administration In detailed look towards the empire Chandragupta had united the whole of northern India under one rule. Mauryan Empire was the first large, powerful, centralized state in India. The Arthashastra laid the foundation of the centralized administration of Mauryan governance. The empire was divided into administrative districts or zones, each of which had a hierarchy of officials. The top most officers from these districts or zones directly reported to the Mauryan ruler. These officials were responsible for collecting taxes, maintaining the army, completing irrigational projects, and maintaining law and order. During Chandragupta reign, the state regulated trade, levied taxes, and standardized weights and measures. Trade and commerce also flourished during this time. The state was responsible for providing irrigational facilities, succor, sanitation, and famine relief to its masses. Megasthenes , in his writings, has praised the efficient Mauryan administration. Before the Kalinga war, the Mauryan administration under Ashoka was not different from that of his predecessors. Ashoka, like previous Mauryan kings, was at the head of the centralized administrative system. He was helped by a council of ministers that was in charge of different ministries like taxation, army, agriculture, justice, etc. The empire was divided into administrative zones, each one having its hierarchy of officials. The top most officers at the zonal level had to keep in touch with the king. These officers took care of all aspects of administration (social welfare, economy, law and order, military) in the different zones. The official ladder went down to the village level.