Breakup of YugoslaviaAfter a period of political and economic crisis in the 1980s, constituent republics of the Socialist Federal Republic of Yugoslavia split apart, but the unresolved issues caused a series of inter-ethnic Yugoslav Wars. The wars primarily affected Bosnia and Herzegovina, neighbouring parts of Croatia and, some years later, Kosovo. After the Allied victory in World War II, Yugoslavia was set up as a federation of six republics, with borders drawn along ethnic and historical lines: Bosnia and Herzegovina, Croatia, Macedonia, Montenegro, Serbia, and Slovenia.
Yugoslav WarsThe Yugoslav Wars were a series of separate but related ethnic conflicts, wars of independence, and insurgencies that took place in the SFR Yugoslavia from 1991 to 2001. The conflicts both led up to and resulted from the breakup of Yugoslavia, which began in mid-1991, into six independent countries matching the six entities known as republics which previously comprised Yugoslavia: Slovenia, Croatia, Bosnia and Herzegovina, Montenegro, Serbia, and North Macedonia (then named Macedonia).
History of CroatiaAt the time of the Roman Empire, the area of modern Croatia comprised two Roman provinces, Pannonia and Dalmatia. After the collapse of the Western Roman Empire in the 5th century, the area was subjugated by the Ostrogoths for 50 years, before being incorporated into the Byzantine Empire. Croatia, as a polity, first appeared as a duchy in the 7th century, the Duchy of Croatia. With the nearby Principality of Lower Pannonia, it was united and elevated into the Kingdom of Croatia which lasted from 925 until 1102.
Ethnic cleansingEthnic cleansing is the systematic forced removal of ethnic, racial, and religious groups from a given area, with the intent of making a region ethnically homogeneous. Along with direct removal, extermination, deportation or population transfer, it also includes indirect methods aimed at forced migration by coercing the victim group to flee and preventing its return, such as murder, rape, and property destruction. It constitutes a crime against humanity and may also fall under the Genocide Convention, even as ethnic cleansing has no legal definition under international criminal law.
ChetniksThe Chetniks (Četnici, tʃɛ̂tniːtsi; Četniki), formally the Chetnik Detachments of the Yugoslav Army, and also the Yugoslav Army in the Homeland and the Ravna Gora Movement, was a Yugoslav royalist and Serbian nationalist movement and guerrilla force in Axis-occupied Yugoslavia. Although it was not a homogeneous movement, it was led by Draža Mihailović. While it was anti-Axis in its long-term goals and engaged in marginal resistance activities for limited periods, it also engaged in tactical or selective collaboration with Axis forces for almost all of the war.
OsijekOsijek (ôsijeːk) is the fourth-largest city in Croatia, with a population of 96,848 in 2021. It is the largest city and the economic and cultural centre of the eastern Croatian region of Slavonia, as well as the administrative centre of Osijek-Baranja County. Osijek is on the right bank of the Drava River, upstream of its confluence with the Danube, at an elevation of . The name was given to the city due to its position on elevated ground, which prevented the city being flooded by the local swamp waters.