Indian administration, as we know, has its evolution that can be traced back to the 5000 years old Indus Valley Civilization wherein the King was all powerful and everything in the Kingdom was carried out in his name. He was assisted bya council of ministers, and also other functionaries and officers in administering the Kingdom. In other words, in the ancient times, powers of administering The Kingdom were centralized in the institution of King.
This was followed by the Vedic period. Early Vedic Aryans were organised into tribes rather than kingdoms. The chief of a tribe was called 'Rajan'The main responsibility of the Rajan was to protect the tribe. He was aided by several functionaries, including the purohita (chaplain), the senani (army chief), duties(envoys), and Spanish (spies).