Polity

Kievan Rus'

former federation of East Slavic tribes

Today's countries

Where its land lies now, by land × years held
CountryShare over the yearskm² × years here ÷ km² × years in allOf all its landland ever held here ÷ all land ever heldHeldyears with land here, first – lastMost at oncelargest km² here in one borderOf the countrymost at once ÷ the country’s km²
Russia61%52%359 years882 – 1240 CE684,069 km²4%
Ukraine21%23%354 years882 – 1235 CE267,859 km²47%
Belarus16%16%354 years882 – 1235 CE204,732 km²99%
Poland2%3%246 years990 – 1235 CE34,243 km²11%
Bulgaria<1%3%10 years970 – 979 CE40,064 km²36%

Trade routes

Kievan Rus', also known as Kyivan Rus', was the first East Slavic state and, later, an amalgam of principalities, in Eastern Europe from the late 9th to the mid-13th century. Encompassing a variety of polities and peoples, including East Slavic, Norse, and Finnic, it was ruled by the Rurik dynasty, founded by the Varangian prince Rurik. The name was coined by Russian historians in the 19th century to describe the period when Kiev was preeminent. At its greatest extent in the mid-11th century, Kievan Rus' stretched from the White Sea in the north to the Black Sea in the south and from the Carpathian Mountains in the west to the Taman Peninsula in the east, uniting the East Slavic tribes.

According to the Primary Chronicle, the first ruler to unite East Slavic lands into what would become Kievan Rus' was Varangian prince Oleg the Wise (r. 879–912). He extended his control from Novgorod south along the Dnieper river valley to protect trade from Khazar incursions from the east, and took control of the city of Kiev, laying the foundation of the state and becoming prince of Kiev. Sviatoslav I (r. 943–972) achieved the first major territorial expansion of the state, fighting a war of conquest against the Khazars. Vladimir the Great (r. 980–1015) spread Christianity with his own baptism and, by decree, extended it to all inhabitants of Kiev and beyond. Kievan Rus' reached its greatest extent under Yaroslav the Wise (r. 1019–1054); his sons assembled and issued its first written legal code, the Russkaya Pravda, shortly after his death.

The state began to decline in the late 11th century, gradually disintegrating into various rival regional powers throughout the 12th century. It was further weakened by external factors, such as the decline of the Byzantine Empire, its major economic partner, and the accompanying diminution of trade routes through its territory. It finally fell to the Mongol invasion in the mid-13th century, though the Rurik dynasty would continue to rule until the death of Feodor I of Russia in 1598. The modern nations of Belarus, Russia, and Ukraine all claim Kievan Rus' as their cultural ancestor, with Belarus and Russia deriving their names from it.

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Text from the Wikipedia article “Kievan Rus'”, available under CC BY-SA 4.0.

Events in its history