Answer:
The Armenians
Step-by-step explanation:
During the time when the Ottoman Empire was embroiled in World War I, a war which they lost and eventually caused the dissolution of the empire, the Ottoman authorities decided to target the Armenian population for genocide.
The Armenians inhabited not only what is now the country of Armenia, but also several other areas in the Caucasus region, and in Eastern Anatolia. They were targeted due to centuries of ethnic and religious hate (Armenians are orthodox Christians), and they were also blamed for the ills of the Empire in the war.
In total, around 2 million Armenians perished in the genocide.