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 Brazil Prime Minister of Brazil Historically, the political post of Prime Minister, officially called President of the Council of Ministers, existed in Brazil in two different periods: from 1847 to 1889 (during the Empire) and from 1961 to 1963 (under the Second Republic). The parliamentary system was first introduced in the country in 1847 by Emperor Pedro II and maintained until the abolition of the monarchy in 1889. The system was briefly restored during the tenure of President João Goulart between 1961 and 1963, after a constitutional amendment approved by his opponents before the beginning of his term created the post;