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 Turks
The Ottoman Turks (or Osmanlı Turks, ) were the Turkish-speaking population of the Ottoman Empire who formed the base of the state's military and ruling classes. Reliable information about the early history of Ottoman Turks is scarce, but they take their Turkish name, "Osmanlı" ("Osman" being corrupted in some European languages as "Ottoman"), from the house of Osman I (reigned ca. 1299–1326), the founder of the dynasty that ruled the Ottoman Empire for its entire 624 years. After the expansion from its home in Bithynia, the Ottoman principality began incorporating other Turkish-speaking Muslims and non-Turkish Christians, becoming the Ottoman Turks and ultimately the Turks of the present. The Ottoman Turks blocked all land routes to Europe by conquering the city of Constantinople, the capital city of the Byzantine–East Roman Empire, and Europeans had to find other ways to trade with Eastern countries.