Answer:
Armenian Genocide happened during WW1 and was committed by the Ottoman Empire against the Armenians. It was systematic mass murder and even cleansing of more than 1.5 million people. It was done because Ottomans were afraid that the Armenians were align with Russia, which at the time was their main enemy.
Step-by-step explanation:
It is interesting to mention that even today Turkish government is renouncing that the genocide ever happened.
Still, according to the usual dates, the genocide started on April 24th,, 1915 .
According to some historians, the genocide spread outside the WW1 during the conflict between Turkey and Armenia.