Answer :

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The regions were Bosnia, Darfur and Rwanda 

Answer: The correct answer is :  Rwanda, Darfur and Bosnia

Explanation:  In Rwanda the war broke out in 1990 between the Tutsi and the Hutu. The exiles formed the Patriotic Front of Rwanda and launched their offensive against Rwanda. The genocide was organized for 100 days, approximately 800,000 Tutsi and Hutu died.

In Sudan they killed 300,000 and displaced more than 2 million people.

In Bosnia, the Serbs attacked the civilians of Bosnia and Croatia and the result was approximately 100,000 people killed.