The first Constitution of the Federative People's Republic of Yugoslavia (later renamed the Socialist Federal Republic of Yugoslavia, SFRY) established Kosovo-Metohija and the northern region of Vojvodina as autonomous provinces within the People's Republic of Serbia. It also promoted the Vardar region of southern Serbia to the status of a separate republic, the People's Republic of Macedonia. The constitution, adopted on 31 January 1946, stated that "The People's Republic of Serbia includes the autonomous province of Vojvodina and the autonomous Kosovo-Metohijan region." It did not spell out the rights and scope of the autonomous provinces, instead stating that this was a matter to be "determined by the constitution of the republic."