In the first millennium BC, Slavs played a leading role in the development of civilization of ethno-Ukrainian society. There were also other ethnic groups which had considerable influence on the ethnogenesis of Ukrainians, such as the, Scithians, Balts, Germans and Kerlates. The territory of Slavs expanded considerably with the coming of a new era. In written sources, they are known as Anths and Sclavs. They shared a common language, similar way of life, similar customs and beliefs. However, there were different tribes, each having its own chiefs, military and policy. After some time, although the Anths disappeared from the South European political map, their traditions have not. The descendants of Anths began populating in the vast areas.
The intensive break-up of patriarchal traditions was observed in the 7th and
8th centuries in the development of East Slav society. Property inequality
of the community intensified and determined the formation of the social
hierarchy. These processes were especially active in the territory of
the Middle Dnieper Area and adjacent lands. Archeological sources have
discovered rather quick development of arable farming, cattle rearing,
handicrafts, and trade. Soon political and economic centers of Slavic
tribes appeared, such as Kyiv. About 14 East Slav tribe unions existed
in Ukraine during the 6th - 9th centuries. This lay the political groundwork
for Rus. In the late 9th century conditions appeared for forming early
feudal states in the area of Slavonic settlement. Modern Kyiv, Chernihiv
and Pereiaslav were the centers of its territory.