Oleg takes Kiev
Per the chronicle, Novgorod and Kyiv unite under one prince
According to the Primary Chronicle, Prince Oleg of Novgorod killed Kiev's rulers Askold and Dir and made the city his capital. The union of Novgorod and Kiev is traditionally seen as the founding of the Kievan Rus' state.
Wikipedia (Russian) · Wikipedia (English) · 9th century
Meanwhile around the world (±25 years)
Africa
- 859 Fatima al-Fihri founds al-Qarawiyyin — 23 years earlier
- c. 900 The bronzes of Igbo-Ukwu — 18 years later
Asia
- 868 The Diamond Sutra is printed — 14 years earlier
Americas
- c. 900 Rise of Chichen Itza — 18 years later
Alive at the time
- Oleg the Wise (aged 37)
- Alfred the Great (aged 33)
- Igor of Kiev (aged 4)
- Edward the Elder (aged 8)