Ottoman Empire
Several historians such as British historian Edward Gibbon and the Greek historian Dimitri Kitzikis have argued that after the fall of Constantinople, the Ottoman state took over the machinery of the Roman state, and that in essence the Ottoman Empire was a continuation of the Eastern Roman Empire under a thin Turkish Islamic guise. Kitzikis called the Ottoman state "a Greek-Turkish condominium". The American historian Speros Vryonis wrote that the Ottoman state was centered on "a Byzantine-Balkan base with a veneer of the Turkish language and the Islamic religion". Other historians have followed the lead of the Austrian historian Paul Wittek who emphasized the Islamic character of the Ottoman state, seeing the Ottoman state as a "Jihad state" dedicated to expanding the world of Islam. Another group of historians led by the Turkish historian M. Fuat Koprulu championed the ""gazi" thesis" that saw the Ottoman state as a continuation of the way of life of the nomadic Turkic tribes who had come from East Asia to Anatolia via Central Asia and the Middle East on a much larger scale, and argued that the most important cultural influences on the Ottoman state came from Persia. More recently, the American historian Heath Lowry called the Ottoman state a "predatory confederacy" led in equal parts by Turks and Greeks converted to Islam.
Millet (Ottoman Empire)
After the decline of the Assyrian Church of the East in the 14th century the principal non-Muslim religious communities in the Ottoman Empire were the Greek Orthodox, Jewish, Armenian and Syriac Orthodox. Although Ottoman administration of non-Muslim subjects was not uniform until the 19th century and varied according to region and group, it is possible to identify some common patterns for earlier epochs. Christian and Jewish communities were granted a large degree of autonomy. Tax collection, education, legal and religious affairs of these communities were administered by their own leaders. This enabled the Ottomans to rule over diverse peoples with "a minimum of resistance". The Jewish community, in particular, was able to prosper under Ottoman rule and its ranks were swelled with the arrival of Jews who were expelled from Spain. At the same time, non-Muslims were subject to several forms of discrimination and excluded from the Ottoman ruling elite. Armenians formed more than one (actually three) millets under the Ottoman rule. A wide array of other groups such as Catholics, Karaites and Samaritans was also represented.