Canceled Slave and Phrai system Centralized administration power by cancelling vassal state and replacing by state governance agents. Canceled Chatusadom which was replaced by 12 ministries Modernized administration system by setting up the Council of the privy and the Ministers. Preserved the nation sovereignty by balancing Compromising policy. Lost a number of the cities in present Cambodia, Laos and Malaysia in order to protect the sovereignty system and replaced by Crown Prince system. Passed away when he Was 57 years old of age.