1915: After a succession of defeats, the Ottoman Empire entered the First World War. The state, which had already lost 80% of its European territory, collapsed. Nationalist ideology won over the Ottoman elite, revealing internal tensions across the Empire. The Armenians, who had been established in Eastern Anatolia for 3,000 years, rapidly became the enemy. Between April 1915 and July 1916, more than one million of them were deported and massacred. This was the first genocide in a century that would see more than its fair share.