It came into existence following World War I,[b] under the name of the Kingdom of Serbs, Croats and Slovenes from the merger of the Kingdom of Serbia with the provisional State of Slovenes, Croats and Serbs, and constituted the first union of South Slavic peoples as a sovereign state, following centuries of foreign rule over the region under the Ottoman Empire and the Habsburg monarchy.

Upon his father's death in 1921, Alexander I went on to rule the country through an extended period of political crisis that culminated in the 6 January Dictatorship and, ultimately, his assassination in 1934.

In 1944, King Peter II, then living in exile, gave his recognition to the Anti-Fascist Council for the National Liberation of Yugoslavia as the legitimate government.

In November 1945, after the war ended, the regency council appointed by the King called a parliamentary election that established the Constituent Assembly of Yugoslavia.

Within Serbia were the two socialist autonomous provinces, Kosovo and Vojvodina, which following the adoption of the 1974 Yugoslav Constitution were largely equal to the other members of the federation.

[8][9] After an economic and political crisis and the rise of nationalism and ethnic conflicts following Tito's death, Yugoslavia broke up along its republics' borders during the Revolutions of 1989, at first into five countries, leading to the Yugoslav Wars.

[16] On 6 January 1929, King Alexander I got rid of the constitution, banned national political parties, assumed executive power, and renamed the country Yugoslavia.

[27] The international political scene in the late 1930s was marked by growing intolerance between the principal figures, by the aggressive attitude of the totalitarian regimes, and by the certainty that the order set up after World War I was losing its strongholds and its sponsors their strength.

Supported and pressured by Fascist Italy and Nazi Germany, Croatian leader Vladko Maček and his party managed the creation of the Banovina of Croatia (Autonomous Region with significant internal self-government) in 1939.

[citation needed] The agreement specified that Croatia was to remain part of Yugoslavia, but it was hurriedly building an independent political identity in international relations.

[citation needed] Prince Paul submitted to fascist pressure and signed the Tripartite Pact in Vienna on 25 March 1941, hoping to continue keeping Yugoslavia out of the war.

On 17 April, representatives of Yugoslavia's various regions signed an armistice with Germany in Belgrade, ending eleven days of resistance against the invading German forces.

In May 1945, the Partisans met with Allied forces outside former Yugoslav borders, after also taking over Trieste and parts of the southern Austrian provinces of Styria and Carinthia.

[39] Western attempts to reunite the Partisans, who denied the supremacy of the old government of the Kingdom of Yugoslavia, and the émigrés loyal to the king led to the Tito-Šubašić Agreement in June 1944; however, Marshal Josip Broz Tito was in control and was determined to lead an independent communist state, starting as a prime minister.

[42] On 11 November 1945, parliamentary elections were held with only the Communist-led People's Front appearing on the ballot, securing all 354 seats in the newly formed Constituent Assembly.

[59] Tito, whose home republic was Croatia, was concerned over the stability of the country and responded in a manner to appease both Croats and Serbs: he ordered the arrest of the Croatian Spring protestors while at the same time conceding to some of their demands.

Albanian and Hungarian became nationally recognised minority languages, and the Serbo-Croat of Bosnia and Montenegro altered to a form based on the speech of the local people and not on the standards of Zagreb and Belgrade.

[64] Another group, inspired and possibly organized by friar Jozo Križić from Duvno, included soldiers serving their military service in the Yugoslav army.

In other words, in less than two years "the trigger mechanism" (under the Financial Operations Act) had led to the layoff of more than 600,000 workers out of a total industrial workforce of the order of 2.7 million.

[71] In 1986, the Serbian Academy of Sciences and Arts drafted a memorandum addressing some burning issues concerning the position of Serbs as the most numerous people in Yugoslavia.

Through a series of moves known as the "anti-bureaucratic revolution", Milošević succeeded in reducing the autonomy of Vojvodina and of Kosovo and Metohija,[73] but both entities retained a vote in the Yugoslav Presidency Council.

[78][79] The constitutional crisis that inevitably followed resulted in a rise of nationalism in all republics: Slovenia and Croatia voiced demands for looser ties within the federation.

[citation needed] Serbian uprisings in Croatia began in August 1990 by blocking roads leading from the Dalmatian coast towards the interior almost a year before Croatian leadership made any move towards independence.

[citation needed] On 9 March 1991, demonstrations were held against Slobodan Milošević in Belgrade, but the police and the military were deployed in the streets to restore order, killing two people.

The Yugoslav People's Army (JNA), whose superior officers were mainly of Serbian ethnicity, maintained an impression of being neutral, but as time went on, they became increasingly more involved in state politics.

The following day (26 June), the Federal Executive Council specifically ordered the army to take control of the "internationally recognized borders", leading to the Ten-Day War.

The Austrian ORF TV network showed footage of three Yugoslav Army soldiers surrendering to the territorial defence force when gunfire was heard and the troops were seen falling down.

[72] Eventually, after the overthrow of Slobodan Milošević from power as president of the federation in 2000, the country dropped those aspirations, accepted the opinion of the Badinter Arbitration Committee about shared succession, and reapplied for and gained UN membership on 2 November 2000.

[100] Likewise, the Serbian Orthodox Church received favorable treatment, and Yugoslavia did not engage in anti-religious campaigns to the extent of other countries in the Eastern Bloc.

[102] Religious differences between Orthodox Serbs and Macedonians, Catholic Croats and Slovenes, and Muslim Bosniaks and Albanians alongside the rise of nationalism contributed to the collapse of Yugoslavia in 1991.