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.
Secularism in Turkey
The establishing structure (Ruling institution of the Ottoman Empire) of the Ottoman Empire (13th century) was an Islamic state in which the head of the Ottoman state was the Sultan. The social system was organized around millet. Millet structure allowed a great degree of religious, cultural and ethnic continuity to non-Muslim populations across the subdivisions of the Ottoman Empire and at the same time it permitted their incorporation into the Ottoman administrative, economic and political system. The Ottoman-appointed governor collected taxes and provided security, while the local religious or cultural matters were left to the regional communities to decide. On the other hand, the sultans were Muslims and the laws that bound them were based on the Sharia, the body of Islamic law, as well as various cultural customs. The Sultan, beginning in 1517, was also a Caliph, the leader of all the Sunni Muslims in the world. By the turn of the 19th century the Ottoman ruling elite recognized the need to restructure the legislative, military and judiciary systems to cope with their new political rivals in Europe. When the millet system started to lose its efficiency due to the rise of nationalism within its borders, the Ottoman Empire explored new ways of governing its territory composed of diverse populations.