 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).