According to the Primary Chronicle, the territories of the East Slavs in the 9th century were divided between the Varangians and the Khazars. The Varangians are first mentioned imposing tribute from Slavic and Finnic tribes in 859. In 862, the Finnic and Slavic tribes in the area of Novgorod rebelled against the Varangians, driving them "back beyond the sea and, refusing them further tribute, set out to govern themselves." The tribes had no laws, however, and soon began to make war with one another, prompting them to invite the Varangians back to rule them and bring peace to the region:

They said to themselves, "Let us seek a prince who may rule over us, and judge us according to the Law." They accordingly went overseas to the Varangian Rus'. … The Chuds, the Slavs, the Krivichs and the Ves then said to the Rus', "Our land is great and rich, but there is no order in it. Come to rule and reign over us". They thus selected three brothers with their kinfolk, who took with them all the Rus' and migrated.

The three brothers—Rurik, Sineus, and Truvor—established themselves in Novgorod, Beloozero, and Izborsk, respectively. Two of the brothers died, and Rurik became the sole ruler of the territory and progenitor of the Rurik Dynasty.