"Turks") were the largest group, with a sizeable Armenian community and other minorities, while Arabic and Kurdish were the predominant languages. The period of peace was finally halted when the Ottoman Empire came into conflict with the Khedivate of Egypt. During this time the city came under the rule of insurgents associated with the Kurdish Milli clan. In 1835, the Milli tribe was subdued by the military troops of the Wāli of Diyarbekir Eyalet, Reşid Mehmed Pasha. During the siege the city's Great Mosque was blown up. Between 1847 and 1865 the city's population suffered from a notable cholera epidemic, with the exact number of fatalities not known. During World War I Mardin was one of the sites of the Assyrian and Armenian genocides. On the eve of World War I, Mardin was home to over 12,000 Assyrians and over 7,500 Armenians. During the course of the war, many were sent to the Ras al-'Ayn Camps, though some managed to escape to the Sinjar Mountain with help from local Chechens. Kurds and Arabs of Mardin typically refer to these events as "fırman" (government order), while Syriacs call it "seyfo" (sword). After the Armistice of Mudros Mardin was one of the Turkish cities that was not occupied by the troops of the Allied Powers. Modern history In 1923, with the founding of the Republic of Turkey, Mardin was made the administrative capital of a province named after it. Many Assyrian survivors of the violence, later on, left Mardin for nearby Qamishli in the 1940s after their conscription in the Turkish military became compulsory. As the Turkish Government subdued the Sheikh Said Rebellion in 1925, the first and the fourteenth cavalry division were stationed in Mardin. Mardin industrialized significantly during the 1990s, when inhabitants moved in greater numbers to the modern parts of the city that were developing on lower ground at the foot of the old city hill. Through a passed law in 2012 Mardin became a metropolitan municipality, which took office after the Turkish local elections in 2014. The city has a significant Arab population. Geography The city is located near the Syrian border and is the center of Mardin province. The old city is built mostly on the southern slope of a long hill topped by a rocky ridge. The slope descends towards the Mesopotamian plain. The top of the ridge is occupied by the city's historic citadel. The