|Language(s)||Old East Slavic|
|Grand Prince of Kyiv|
|Legislature||Veche, Prince Council|
|- Disestablished||13th century|
The early part of the state is sometimes known as the "Rus Khaganate". The history of Rus' proper begins in 882. This is when the capital was moved from Novgorod to Kyiv. This was after Varangians (Vikings), who were called Rus, freed this slavic city from the Khazars' tribute. The state reached its most powerful in the mid 11th century. Its lands went south to the Black Sea, east to the Volga, and west to the Kingdom of Poland and to the Grand Duchy of Lithuania. Vladimir the Great (980–1015) and his son Yaroslav I the Wise (1019–1054) ruled in the "Golden Age" of Kyiv. With the end of the Viking age, the state lost power in the late 11th and during the 12th century. The broke apart into various rival regional powers.
The various East Slavic principalities were brought together in the Russian Empire in the 18th century. The modern East Slavic states of Belarus, Ukraine and Russia all get their identity from the early medieval state.
- (Russian) Назаренко А. В. Глава I // Древняя Русь на международных путях: Междисциплинарные очерки культурных, торговых, политических связей IX—XII вв. — М.: Языки русской культуры, 2001. — c. 42—45, 49—50. — ISBN 5-7859-0085-8.
- "Российский и русский" (in Russian). Грамота.ру. http://www.gramota.ru/spravka/trudnosti/36_186. Retrieved 16 January 2012.
- Tolochko, A. P. (1999). "Khimera "Kievskoy Rusi"" (in Russian). Rodina (8): 29–33.
- "The Russian Primary Chronicle". http://www.britannica.com/eb/article-9064486/The-Russian-Primary-Chronicle.; see also  and 
- "Kievan Rus' and Mongol Periods". http://www.shsu.edu/~his_ncp/Kievan.html.
- Plokhy, Serhii (2006). The Origins of the Slavic Nations: Premodern Identities in Russia, Ukraine, and Belarus. New York: Cambridge University Press. pp. 10–15. ISBN 978-0-521-86403-9. http://assets.cambridge.org/97805218/64039/excerpt/9780521864039_excerpt.pdf. Retrieved 2010-04-27.