The Mehmed IV reference article from the English Wikipedia on 24-Jul-2004
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Mehmed IV

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Mehmed IV, also known as Dördüncü and Avci, (January 2, 1642 - 1693) was the sultan of the Ottoman Empire from 1648 to 1687. He was the son of Ibrahim I.

Known as Avci, the hunter, outdoor exercise took up much of the time of Sultan Mehmed. His reign is notable for a brief revival of Ottoman fortunes led by the ruthless Grand Vizier, Mehmed Köprülü. Köprülü regained the Aegean islands from Venice and fought successful campagns against Transylvania (1664) and Poland (1670-1674) – at one point Ottoman rule was close to extending into Podolia and the Ukraine. A later vizier, Kara Mustafa was less able. Supporting the 1683 Hungarian uprising of Imre Thököly against Austrian rule, Kara Mustafa marched a vast army through Hungary and besieged Vienna (see Battle of Vienna). On the Khalenburg Heights, the Ottomans were utterly routed by the Imperial army (under Charles IV, Duke of Lorraine) and the vengeful Poles led by their King, John III Sobieski. Kara Mustafa was strangled in Belgrade on Mehmed's orders, but it was not enough to save the throne for the Sultan who was deposed and imprisoned at Edirne near his favourite hunting grounds.