Mongol invasion of Kievan Rus'
The Mongol invasion of Kievan Rus' was part of the Mongol invasion of Europe, in which the Mongol Empire invaded and conquered Kievan Rus' in the 13th century, destroying numerous cities, including Ryazan, Kolomna, Moscow, Vladimir and Kiev, with the only major cities escaping destruction being Novgorod and Pskov.