Context: 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. Sviatoslav I (died 972) achieved the first major expansion of Kievan Rus' territorial control, fighting a war of conquest against the Khazar Empire. Vladimir the Great (980–1015) introduced Christianity with his own baptism and, by decree, that of all the inhabitants of Kiev and beyond. Kievan Rus' reached its greatest extent under Yaroslav I (1019–1054); his sons assembled and issued its first written legal code, the Rus' Justice, shortly after his death.

Question: What year was Kievan Rus became a territory?
Answer: 882

Question: Who was the ruler at the begining of Kievan?
Answer: Prince Oleg

Question: Who achieve the first major expansion of Kievan?
Answer: Kiev. Sviatoslav I

Question: Which ruler introduced Christianity in Kievan Rus?
Answer: Vladimir the Great

Question: What did Yaroslav sons achieve  during his time in Keivan Rus?
Answer: issued its first written legal code

Question: What years did Prince Oleg reign?
Answer: Unanswerable

Question: Which way did Prince Oleg extend his rule?
Answer: Unanswerable

Question: Who achieved the first minor expansion of Kievan?
Answer: Unanswerable

Question: Which ruler introduced Islam in Kievan Rus?
Answer: Unanswerable

Question: What did Yaroslav daughters achieve during his time Keivan Rus?
Answer: Unanswerable