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.
History of slavery in the Muslim world
Slavery was a legal and important part of the economy of the Ottoman Empire and Ottoman society until the slavery of Caucasians was banned in the early 19th century, although slaves from other groups were allowed. In Constantinople (present-day Istanbul), the administrative and political center of the Empire, about a fifth of the population consisted of slaves in 1609. Even after several measures to ban slavery in the late 19th century, the practice continued largely unfazed into the early 20th century. As late as 1908, female slaves were still sold in the Ottoman Empire. Sexual slavery was a central part of the Ottoman slave system throughout the history of the institution.