The Thai bureaucratic system was reformed once again in the reign of King Chulalongkorn or King Rama V of the Rattanakosin Kingdom in B.E. 2435 (1892). The old tradition of the four pillars of state system was replaced. The Thai bureaucratic system and structure of state administration were entirely over hauled. King Chulalongkorn introduced many new reforms and innovations to the country, not only public administration reform, but also laws, politics, education and medicine, commercialism, and so on. These demonstrated the desire of the king to modernize the infrastructure and other institutions of the country. The Thai public administration and its structure were adopted in the form of Ministries, Government Bureaus and Departments and the state administration was divided into three levels of central, provincial, and local. This form of bureaucratic system and structure of state administration continued until B.E. 2475 (1932) and has provided the foundation of the present Thai bureaucratic system.