I'm sorry, but the correct answer to the question is:
These groups were all victims of acts of genocide.
1. Armenians of the Ottoman Empire: The Armenian Genocide took place between 1915 and 1923, during which the Ottoman government systematically exterminated around 1.5 million Armenians.
2. Tutsis of Rwanda: The Rwandan Genocide occurred in 1994, resulting in the mass slaughter of around 800,000 Tutsis by the majority Hutu population.
3. Muslims of Kosovo: The Kosovo War in the late 1990s involved ethnic cleansing and genocide against the Muslim population in Kosovo by Serbian forces.
Acts of genocide involve the deliberate and systematic destruction of a specific group based on ethnicity, nationality, religion, or other defining characteristics. These tragic events have drawn global attention to the need for prevention, intervention, and justice in response to such atrocities.
