Final answer:
Russia came into being after the Mongols took over land controlled by the Slavs.
Step-by-step explanation:
Russia came into being after the Mongols took over land controlled by the Slavs. The Mongols, under the leadership of Genghis Khan, established the Golden Horde in the 13th century, which ruled over a vast territory including present-day Russia. The Mongol rule had a significant influence on the development of Russia, shaping its political, social, and cultural institutions.
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