Suleiman I, His Imperial Majesty Grand Sultan, Commander of the Faithful and Successor of the Prophet of the Lord of the Universe (Ottoman Modern Turkish: Sleyman; almost always Kanuni Sultan sleyman; 6 November 1494 5/6/7 September 1566) was the tenth and longest-reigning Sultan of the Ottoman Empire, from 1520 to his death in 1566. He is known in the West as Suleiman the Magnificent and in the East, as the Lawmaker (in Turkish Kanuni, for his complete reconstruction of the Ottoman legal system. Suleiman became a prominent monarch of 16th century Europe, presiding over the apex of the Ottoman Empire's military, political and economic power. Suleiman personally led Ottoman armies to conquer the Christian strongholds of Belgrade, Rhodes, and most of Hungary before his conquests were checked at the Siege of Vienna in 1529. He annexed most of the Middle East in his conflict with the Persians and large swathes of North Africa as far west as Algeria. Under his rule, the Ottoman fleet dominated the seas from the Mediterranean to the Red Sea and the Persian Gulf.