The Socialist Federal Republic of Yugoslavia (SFRY) was the Yugoslav state founded during World War II until it was dissolved in 1992 amid the Yugoslav Wars. It was a socialist state and a federation made up of six socialist republics: Bosnia and Herzegovina, Croatia, Macedonia, Montenegro, Serbia, and Slovenia. Serbia, in addition, included two autonomous provinces of Vojvodina and Kosovo and Metohija.
Initially siding with the Eastern bloc under the leadership of Josip Broz Tito at the beginning of the Cold War, Yugoslavia pursued a policy of neutrality after the Tito–Stalin split of 1948, and became one of the founding members of the Non-Aligned Movement. After the death of Tito in 1980, rising ethnic nationalism in the late 1980s led to dissidence among the multiple ethnicities within the constituent republics, followed by collapse of inter-republic talks on transformation of the country and recognition of their independence by some European states in 1991. This led to the country collapsing on ethnic lines, followed by the final downfall and break of the country in 1992, and the start of the Yugoslav Wars.
“Hej Sloveni” is an anthemic song dedicated to Slavic peoples. It was the national anthem of SFR Yugoslavia from 1943 to 1991 (48 years). With formal adoption (inauguration) of the Amendment IX to the Constitution of the Socialist Federal Republic of Yugoslavia, the anthem Hey, Sloveni gained constitutional sanction on November 25, 1988. After the 43 years of continued use as the de facto anthem, the delegates simply brought the law in line with the reality.