Prime Minister of Thailand Rajanubhab took over this role. In fact, the office most considered the precursor of that of the prime minister was the ancient office of "Samuha Nayok" (สมุหนายก), which was run by an "Akkhra Maha Senabodi" (อัครมหาเสนาบดี) or "chief minister in charge of civilian affairs". The first Prime Minister of Siam was Phraya Manopakorn Nititada, a judge. The title of the office was changed from "Prime Minister "of Siam"" to "Prime Minister "of Thailand"" in 1945 and then permanently with the renaming of Siam to Thailand in 1949. For most of its existence the office has been occupied by Army leaders;
Prime Minister of Cambodia to 1998. Elected as prime minister in his own right in 1998, he is the longest serving prime minister in Cambodian history. The position was first held by King Norodom Sihanouk in March 1945, during the French colonial administration. Cambodia's first parliamentary elections were held on 1 September 1946. The Democratic Party remained the dominant-party in Cambodian politics throughout the 1940s until the formation of the Sangkum Reastr Niyum in 1955. Sangkum was the dominant-party in Cambodia from 1955 to 1970 following a military coup by General Lon Nol. Until 1993, it was not an elected position. Merely few prime