Kievan Rus′ (rusʲ), also written as Kyivan Rus′, was a medieval state dominated by the city of Kiev from about 880 to around the middle of the 12th century. From the historiographical point of view, Rus' polity is considered an early predecessor of three modern East Slavic nations: Belarusians, Russians and Ukrainians. The reigns of Vladimir the Great (980-1015) and his son Yaroslav I the Wise (1019-1054) constitute the Golden Age of Kiev, which saw the acceptance of Orthodox Christianity and the creation of the first East Slavic written legal code, the Russkaya Pravda. The early Rus' were most likely a Scandinavian warrior-elite that ruled a majority of Slavic subjects. Scandinavians continued to remain in control until at least the mid-11th century.