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.
Armenian nationalism
The situation of the non-Muslim minorities within the Ottoman Empire changed substantially as a result of reforms introduced during the Tanzimat era. The early reforms were generally addressed at changing the organisation of, and systems within, the Ottoman Empire as a whole. However, as a result of diplomatic pressures exerted by the Great Powers that had supported the Ottoman Empire against Russia during the Crimean War, in 1856 reforms were made that sought to give non-Muslims citizens of the Ottoman Empire the same rights as Muslim citizens. The capitation tax on non-Muslims was abolished, non-Muslims were allowed to become soldiers, and schools for the non-Muslim communities were allowed to open.