What was an accomplishment of the oleg?

Oleg of Novgorod, a key figure in early East Slavic history, is best known for uniting the Eastern Slavic tribes and establishing Kievan Rus' as a significant power in the region. One of his notable accomplishments was the successful conquest of Kyiv around 882, which he transformed into the political and cultural center of the emerging state. Oleg also established trade relations with the Byzantine Empire, enhancing economic prosperity and cultural exchange that would influence the region for centuries.