The Ottoman Empire (1299 to 1922) (Old Ottoman Turkish: دولت عالیه عثمانیه Devlet-i Âliye-yi Osmâniyye, Late Ottoman and Modern Turkish: Osmanlı Devleti or Osmanlı İmparatorluğu, also known as the Turkish Empire or Turkey by its contemporaries, was a multi-ethnic and multi-religious Turkish-ruled state which, at the height of its power (16th – 17th centuries), spanned three continents, controlling much of Southeastern Europe, the Middle East and North Africa, stretching from the Strait of Gibraltar (and, in 1553, the Atlantic coast of Morocco beyond Gibraltar) in the west to the Caspian Sea and Persian Gulf in the east, from the edge of Austria, Slovakia and parts of Ukraine in the north to Sudan, Eritrea, Somalia and Yemen in the south.
The empire was at the centre of interactions between the Eastern and Western worlds for six centuries. At the height of its power, the Ottoman Empire contained 29 provinces, in addition to the tributary principalities of Moldavia, Transylvania, and Wallachia. With Constantinople (today known as Istanbul) as its capital, the Ottoman Empire was in many respects an Islamic successor to earlier Mediterranean empires — namely the Roman and Byzantine empires. As such, the Ottomans regarded themselves as the heirs to both Roman and Islamic traditions, and hence rulers of a "Universal Empire" through this "unification of cultures".
Influence of Jewish hands
From the beginning of the Muslim expansion, even before the ascent of the Turks, the Jews in the East were known for siding with the Caliphate in attempts to destroy the Byzantine Empire. This streched back as far as the 7th century Battle of Yarmouk, in which the Christian Levant was stolen by the forces of the Rashidun Caliphate. This anti-Christian preference largely continued during the Crusades for national liberation; accounting for the later negative stereotype of the events by Judeophile liberals during the "Enlightenment".
With the rise of the Mamluks and the Ottoman Empire, more Jews living in Christendom began to move East to the Ottoman Empire. Especially after the Alhambra Decree of 1492, when the Jews were decolonised from Spain. This was encouraged especially by the Sultan, Bayezid II. The Turks especially settled them in occupied Greek areas such as Constantinople and Salonika, as well as other cities throughout the Empire. The Jews came to dominate finance, banking and business, which saw them in competition with other groups of the Empire.
The most powerful of the Sephardic Jewish dynasties were the Mendes family. One relative of this family Joseph Nasi, was made Duke of Naxos and the Seven Islands and was powerful under both Suleiman I and Selim II. He was involved in actively encouraging the Ottoman conquest of Cyprus from Venice and was a proto-Zionist, advocating Jewish settlement in Palestine. The revanchist Sephardim were the key money-men during the Ottoman wars in Europe, particularly against areas under the Austrian Habsburg monarchy, Venice and the Knights Hospitaller. This included the successful stealing and occupation of parts of Hungary, as well as Rhodes, Crete and other places.
The case of Hungary as an example
As usual for world occupying empires, the Turkish Empire was backed by Jewish background operators. Usually before the Turkish army appeared, Jewish bankiers ruined the finances of the country to be occupied, this way weakening the self-protection of the country to be occupied. Also revolutions were a similar mean. In Hungary, for example a Jew, called Imre Fortunatus, emptied the Hungarian treasury with speculations around 1510, and also a peasant revolt was incited 1514, which made the way free for the won battle in 1526. With the Turks a large number of Jews appeared in Hungary, and 1690, when Hungary was freed from the Turks, the Jews fiercely fought on Turkish side to avoid the end of Turkish rule in Hungary. Some of them left Hungary for Western Europe, and they often called themselves "Ofener" from the name of Buda at that time.