People exist at certain geographical location at some historical period; as time passed by areas of human distribution and borders of states changed. Both ethnic groups and states are not eternal: they are born and perish, develop and transform in new social communities. So Russian, Ukrainian and Byelorussian people were formed on the basis of eastern Slavonic superethnic group.

Formation of people (process of ethnogeny) and formation of states have economic base closely connected with inhabitancy of people and their way of life which in its turn influenced cultural and community features of ethnic groups.

Natural cradle of eastern Slavic people of the Russian state was Eastern European plain. Its open spaces, landscapes, soil and climatic conditions, river basins determined not only the formation of dominant economic and cultural complexes, population settlements but also the formation of ethnic and state frontiers according to results of armed political conflicts and colonization processes.

To the middle of the first millenium AD there were steady economic and cultural complexes located in woods, forest-steppes and steppe zones of Eurasia; the process of ethnogeny developed actively. To VI - VII centuries the final stage of eastern slavs allocation from common pro-Slavonic unity began.
The transformation of eastern Slavic cultural and ethnic community into local independent civilization was connected with the adoption of Christianity by prince Vladimir in 988.

With adoption of Christianity eastern Slavs entered Orthodox Church which determined development of the Russian state. Transformation of Kiev into the political, cultural and religious centre of eastern Slavic state resulted in gradual strengthening of cultural delimitation of the Kiev Russia relative the west slavic neighbours who adopted Christianity from Rome. Epoch of the Kiev Russia was the period of mainly southern orientation of eastern Slavic life. Russia was close to Byzantium because of religious and trade communications, to Bulgaria - because of common script.

The form of government of the Ancient Russian state included three components - veche as a special form of national assembly which discussed the most important questions; royal authority with administrative, judicial and military powers; royal council which was the assembly of supreme administration representatives.

The state was multinational from its formation. On the territory of Ancient Russia lived Finno-Ugric people - Karelians, Veps, Saams. The Perm land occupied by Komi was joined at the end of XV century.

The Legal Heritage of Greece and Rome 
The ancient Greeks were among the first to develop a concept of law that separated everyday law from religious beliefs. Before the Greeks most civilizations attributed their laws to their gods or goddesses. Instead, the Greeks believed that laws were made by the people for the people. 
In the seventh century B.C., Draco* drew up Greece's first comprenensive written code of laws. Under Draco's code death was the punishment for most offences. Thus, the term draconian usually applies to extremely harsh measures. 
Several decades passed before Solon  poet, military hero, and ultimately Athens’ lawgiver  devised a new code of laws. Trial by jury, an ancient Greek tradition was retained, but enslaving debtors was prohibited as were most of the harsh punishments of Draco's code. Under Solon's law citizens of Athens were eligible to serve in the assembly and courts were established in which they could appeal government decisions. 
What the Greeks may have contributed to the Romans was the concept of “natural law.” In essence, natural law was based on the belief that certain basic principles are above the laws of a nation. These principles arise from the nature of people. The concept of natural law and the development of the first true legal system had a profound effect on the modern world.