r>Galicia-Volhynia was eventually assimilated by the Polish-Lithuanian Commonwealth, while the Mongol-dominated Vladimir-Suzdal and Novgorod Republic, two regions on the periphery of Kiev, established the basis for the modern Russian nation. The Novgorod together with Pskov retained some degree of autonomy during the time of the Mongol yoke and were largely spared the atrocities that affected the rest of the country. Led by Prince Alexander Nevsky, Novgorodians repelled the invading Swedes in the Battle of the Neva in 1240, as well as the Germanic crusaders in the Battle of the Ice in 1242, breaking their attempts to colonize the Northern Rus'.
Grand Duchy of Moscow
The most powerful successor state to Kievan Rus' was the Grand Duchy of Moscow ("Moscovy" in the Western chronicles), initially a part of Vladimir-Suzdal. While still under the domain of the Mongol-Tatars and with their connivance, Moscow began to assert its influence in the Central Rus' in the early 14th century, gradually becoming the main leading force in the process of the Rus' lands' reunification and expansion of Russia.
Those were hard times, with frequent Mongol-Tatar raids and agriculture suffering from the beginning of the Little Ice Age. As in the rest of Europe, plagues hit Russia somewhere once every five or six years from 1350 to 1490. However, due to the lower population density and better hygiene (widespread practicing of banya, the wet steam bath), the population loss caused by plagues was not so severe as in the Western Europe, and the pre-Plague populations were reached in Russia as early as 1500.
Led by Prince Dmitry Donskoy of Moscow and helped by the Russian Orthodox Church, the united army of Russian principalities inflicted a milestone defeat on the Mongol-Tatars in the Battle of Kulikovo in 1380. Moscow gradually absorbed the surrounding principalities, including the formerly strong rivals, such as Tver and Novgorod.
Ivan III (the Great)
