Bhumibol was involved in many social and economic development projects. The nature of his involvement varied by political regime.[131]
The government of Plaek Phibunsongkhram (1951–1957) limited Bhumibol to a ceremonial role. During that period Bhumibol produced some films and operated a radio station from Chitlada Palace using personal funds.
In the military governments of Sarit Thanarat and his successors (1958–1980), Bhumibol was portrayed as the "development King" and the inspiration for the economic and political goals of the regime. Royally ordered projects were implemented under the financial and political support of the government, including projects in rural areas and communities under the influence of the Communist Party of Thailand. Bhumibol's visits to these projects were heavily promoted by the Sarit government and broadcast in state-controlled media.