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Ivan III Vasilyevich (Russian: Иван III Васильевич; 22 January 1440 – 27 October 1505), also known as Ivan the Great, was Grand Prince of Moscow and all Russia from 1462 until his death in 1505. Ivan served as the co-ruler and regent for his blind father Vasily II before he officially ascended the throne.
He multiplied the territory of his state through conquest, purchase, inheritance and the seizure of lands from his dynastic relatives, and laid the foundations of the centralized Russian state. He also renovated the Moscow Kremlin and introduced a new legal code. Ivan is credited with ending the dominance of the Tatars over Russia; his victory over the Great Horde in 1480 formally restored its independence.Ivan began using the title tsar, and used the title tentatively until the Habsburgs recognized it. While officially using "tsar" in his correspondence with other monarchs, he was satisfied with the title of grand prince at home.
Through marriage to Sophia Palaiologina, Ivan made the double-headed eagle Russia's coat of arms, and adopted the idea of Moscow as the third Rome. His 43-year reign was the second-longest in Russian history, after that of his grandson Ivan IV.