The Socialist Republic of Montenegro (), commonly referred to as Socialist Montenegro or simply Montenegro, was one of the six republics forming the Socialist Federal Republic of Yugoslavia and the nation state of the Montenegrins. It is a predecessor of the modern-day Montenegro. Prior to its formation, Montenegro was part of Zeta banovina administrative unit of Kingdom of Yugoslavia. History On 7 July 1963, the People's Republic of Montenegro (Serbo-Croatian: Narodna Republika Crna Gora / Народна Република Црна Гора) was renamed the "Socialist Republic of Montenegro" (a change ratified both by the Federal Constitution and the newly created Montenegrin Constitution in 1963) with Serbo-Croatian as the official language. In 1991, as the League of Communists of Montenegro changed its name to Democratic Party of Socialists of Montenegro after the first multi-party elections, the adjective "Socialist" was deleted from the republic's title (ratified by the Constitutional Amendment LXXXIV of August 2 in 1991).The Flag and Emblem was changed in 1993 December Demographics 1971 census: Montenegrins: 355,632 (67.15%) ethnic Muslims: 70,236 (13.26%) Serbs: 39,512 (7.46%) Albanians: 35,671 (6.74%) Yugoslavs: 10,943 (2.07%) Croats: 9,192 (1.74%) Total: 529,604 inhabitants 1981 census: Montenegrins: 400,488 (68.54%) ethnic Muslims: 78,080 (13.36%) Albanians: 37,735 (6.46%) Yugoslavs: 31,243 (5.35%) Serbs: 19,407 (3.32%) Croats: 6,904 (1.18%) Roma: 1,471 (0.25%) Macedonian: 875 (0.15%) Slovenes: 564 (0.1%) Hungarians: 238 (0.04%) Germans: 107 (0.02%) Russians: 96 (0.02%) Italians: 45 (0.01%) other: 816 (0.14%) No response: 301 (0.05%) Regional affiliation: 1,602 (0.27%) Unknown: 4,338 (0.74%) Total: 584,310 inhabitants 1991 census Montenegrins: 380,467 (61.86%) ethnic Muslims: 89,614 (14.57%) Serbs: 57,453 (9.34%) Albanians: 40,415 (6.57%) Yugoslavs: 26,159 (4.25%) Croats: 6,244 (1.02%) Roma: 3,282 (0.53%) Macedonians: 1,072 (0.17%) Slovenes: 369 (0.06%) Hungarians: 205 (0.03%) Germans: 124 (0.02%) Russians: 118 (0.02%) Italians: 58 (0.01%) other: 437 (0.07%) No response: 1,944 (0.32%) Regional affiliation: 998 (0.16%) Unknown: 6,076 (0.99%) Total: 615,035 inhabitants Heads of institutions President President of the Montenegrin Anti-Fascist Assembly of National Liberation Niko Miljanić (15 November 1943 – 21 November 1946) Presidents of the Presidium of the People's Assembly Miloš Rašović (21 November 1946 – 6 November 1950) Nikola Kovačević (6 November 1950 – 4 February 1953) Presidents of the People's Assembly Nikola Kovačević (4 February 1950 – 15 December 1953) Blažo Jovanović (15 December 1953 – 12 July 1962) Filip Bajković (12 July 1962 – 5 May 1963) Andrija Mugoša (5 May 1963 – 5 May 1967) Veljko Milatović (5 May 1967 – 6 October