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Mustafa III,1717–73, Ottoman sultan (1757–73), son of Ahmed III. He succeeded his cousin Osman III to the throne of the Ottoman Empire (Turkey). The chief event of his reign was the war of 1768–74 with Russia (see Russo-Turkish WarsRusso-Turkish Wars.
The great eastward expansion of Russia in the 16th and 17th cent., during the decline of the Ottoman Empire, nevertheless left the shores of the Black Sea in the hands of the Ottoman sultans and their vassals, the khans of Crimea.
..... Click the link for more information. ), which ended disastrously for Turkey (see Kuchuk Kainarji, Treaty ofKuchuk Kainarji, Treaty of
, 1774, peace treaty signed at the end of the first of the Russo-Turkish Wars undertaken by Catherine II of Russia against Sultan Mustafa III of the Ottoman Empire (Turkey).
..... Click the link for more information. ). His brother Abd al-Hamid I succeeded him in Jan., 1774.