Kievan RussiaKi·ev·an Russia
A medieval Slavic state that was the forerunner of modern Russia. Centered around the city of Kiev, it included most of present-day Ukraine and Belarus and part of northwest Russia. Kievan Russia grew steadily in power and influence through the 10th and 11th century, but it was later weakened by internal disputes and fell to the Mongols by 1240.
- Dated form of Kievan Rus.