The Brazilian military government was the authoritarian military dictatorship that ruled Brazil from April 1, 1964 to March 15, 1985. It began with the 1964 coup d'état led by the Armed Forces against the administration of the President João Goulart, who had assumed the office after being vice-president, upon the resignation of the democratically elected president Janio Quadros, and ended when José Sarney took office on March 15, 1985 as President. The military revolt was fomented by Magalhães Pinto, Adhemar de Barros, and Carlos Lacerda (who had already participated in the conspiracy to depose Getulio Vargas in 1945), Governors of Minas Gerais, São Paulo, and Guanabara. The coup was also supported by the Embassy and State Department of the United States.