I want to know the answer to the following question:
Who was the ruler at the begining of Kievan?
All the background I'm provided with is that "Kievan Rus' begins with the rule (882–912) of Prince Oleg, who extended his control from Novgorod south along the Dnieper river valley in order to protect trade from Khazar incursions from the east and moved his capital to the more strategic Kiev.". Is that enough to answer the question?
Answer: yes