By 1930 the military dictatorship had stabilized Portugal and the national leadership and state functionaries began to think about the future. The overarching question was "In what form was the dictatorship to continue?". The answer was provided by Salazar, who became Prime Minister on July 5, 1932 and in 1933 reorganized the regime as the Estado Novo. A new Constitution was approved in a referendum, defining Portugal as a Corporative, Single Party and Multi-continental country (in Europe, Africa, Asia and Oceania). The single party was the União Nacional (National Union), and a new labour code, the "Estatuto do Trabalho Nacional" (Code of National Labour), prohibited all free trade unions. Salazar's new regime brought in a system of censorship, and also created a political police force, the PVDE ("Polícia de Vigilância e de Defesa do Estado"; State Defense and Vigilance Police).