section_path: History/Grand Principality of Moscow
section_name: Grand Principality of Moscow
paragraph_text: Grand Principality of Moscow
  
  The destruction of Kievan Rus' saw the eventual rise of the Grand Principality of Moscow, initially a part of Vladimir-Suzdal.: 11–20 While still under the domain of the Mongol - Tatars and with their connivance, Moscow began to assert its influence in the region in the early 14th century, gradually becoming the leading force in the "gathering of the Russian lands". When the seat of the Metropolitan of the Russian Orthodox Church moved to Moscow in 1325, its influence increased. Moscow's last rival, the Novgorod Republic, prospered as the chief fur trade centre and the easternmost port of the Hanseatic League.
  
  Led by Prince Dmitry Donskoy of Moscow, the united army of Russian principalities inflicted a milestone defeat on the Mongol-Tatars in the Battle of Kulikovo in 1380. Moscow gradually absorbed its parent duchy and surrounding principalities, including formerly strong rivals such as Tver and Novgorod.
  
  Ivan III ("the Great") threw off the control of the Golden Horde and gained sovereignty over the ethnically Russian lands; he later adopted the title of sovereign of all Russia. After the fall of Constantinople in 1453, Moscow claimed succession to the legacy of the Eastern Roman Empire. Ivan III married Sophia Palaiologina, the niece of the last Byzantine emperor Constantine XI, and made the Byzantine double-headed eagle his own, and eventually Russia's, coat-of-arms. Vasili III united all of Russia by annexing the last few independent Russian states in the early 16th century.