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 the Netherlands year the Constitution of the Netherlands was amended to make ministers responsible to the States General rather than – as hitherto – being responsible to the King, who acted as the leader of cabinet. Until 1901 the position chair of the Council of Ministers officially rotated between ministers. Between 1901 and 1945 the position formally still rotated but prominent politicians were able to claim a rotation period of four years. In 1937 a separate Ministry of General Affairs was instituted which was informally linked to the Prime Minister. Barend Biesheuvel (1971–1973) was the last Prime Minister who was not the