Islam in the Ottoman Empire
Islam was the official religion of the Ottoman Empire. The highest position in Islam, "caliphate", was claimed by the sultan, after the defeat of the Mamluks which was established as Ottoman Caliphate. The Sultan was to be a devout Muslim and was given the literal authority of the Caliph. Additionally, Sunni clerics had tremendous influence over government and their authority was central to the regulation of the economy. Despite all this, the Sultan also had a right to decree, enforcing a code called Kanun (law) in Turkish. Additionally, there was a supreme clerical position called the Sheykhulislam ("Sheykh of Islam" in Arabic). Minorities, particularly Christians and Jews but also some others, were mandated to pay the jizya, the poll tax as mandated by traditional Islam.
Ottoman Empire
Society, government and religion was inter-related in complex ways after about 1800, in a complex overlapping, inefficient system that Atatürk systematically dismantled after 1922. In Constantinople, the Sultan ruled two distinct domains the secular government and the religious hierarchy. Religious officials formed the Ulama Who had control of religious teachings and theology, and also the Empire's judicial system, Giving them a major voice in day-to-day affairs in communities across the Empire (but not including the non-Moslem millets). They were powerful enough to reject the military reforms proposed by Sultan Selim III. His successor Sultan Mahmud II (r. 1808–1839) first won ulama approval before proposing similar reforms. The secularization program of Atatürk brought ended the ulema and their institutions. The caliphate was abolished, madrasas were closed down and the sharia courts abolished. He replaced the Arabic alphabet with Latin letters, ended the religious school system, and gave women some political rights. Many rural traditionalists never accepted this secularization, and by the 1990s they were reasserting a demand for a larger role for Islam.