In 1991, Croatia declared independence from Yugoslavia, leading to a civil war primarily involving Croats and Serbs. The conflict stemmed from rising nationalism and ethnic tensions within the multi-ethnic federation. Thus, the correct answer is B. Croatia.
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In 1991, Yugoslavia began to break apart, and the events that followed led to a series of civil wars. Among the republics within the former Yugoslavia, Serbia, under the leadership of Slobodan Milošević, became a significant power.
Here is a detailed explanation:
Background: Yugoslavia was a multi-ethnic country in Southeast Europe that consisted of several republics, including Serbia, Croatia, Slovenia, Bosnia and Herzegovina, Macedonia, and Montenegro. In the late 1980s and early 1990s, rising nationalist sentiments and economic difficulties led to tensions among these republics.
Serbia's Role: Serbia, with its capital in Belgrade, was the largest and most populous republic. Under the influence of Slobodan Milošević, who became the president of Serbia in 1989, Serbian nationalists sought to assert dominance over Yugoslavia's political landscape.
The Trigger for Civil War: In 1991, Slovenia and Croatia declared independence from Yugoslavia, which was not accepted by Serbia and the central Yugoslav government. This led to the outbreak of the Yugoslav Wars, a series of conflicts that included the Croatian War of Independence and later the Bosnian War.
Significance: The power struggles, driven by ethnic and political tensions, particularly Serbia's ambitions to maintain dominance, were a key factor in the disintegration of Yugoslavia and the ensuing civil wars.
Therefore, the correct answer to this question is option A. Serbia .