Question

Последним правителем единого Древнерусского государства с центром в Киеве являлся кто?

Answer 1

 Мстислав Владимирович Великий (1125-1132), сын Владимира Мономаха. 

Answer 2

Last Ruler of the Unified Ancient Rus State

The last ruler of the unified Ancient Rus state with its center in Kiev was Vladimir the Great. He reigned from 980 to 1015 and is known for his efforts to consolidate the various East Slavic tribes under Kievan Rus.

Vladimir the Great is also known for his conversion to Christianity and the subsequent Christianization of Kievan Rus, which had a profound and lasting impact on the culture and history of the region