روس الكييفية
One of the first Rus' regions according to the Sofia First Chronicle was Veliky Novgorod in 859. In late 8th and early-to-mid-9th centuries AD the Rus' Khaganate was formed in modern western Russia. The region was a place of operations for Varangians, eastern Scandinavian adventurers, merchants, and pirates. From the late 9th to the mid-13th century a large section of today's European Russia was part of Kievan Rus'. The lands of Rus' Khaganate and Kievan Rus' were important trade routes and connected Scandinavia, Byzantine Empire, Rus' people and Volga Bulgaria with Khazaria and Persia. According to old Scandinavian sources among the 12 biggest cities of Kievan Rus' or Ancient Rus' were Novgorod, Kiev, Polotsk, Smolensk, Murom and Rostov.