How did the society of the Eastern Slavs change in the 9-12 centuries?

In the period from 862 to 1200, the Eastern Slavs appeared:

The ruling dynasty is the Rurikovichs. Its representatives ruled in all principalities, from Galitsko-Volynsky to Vladimir-Suzdal.
Feudal fragmentation, especially after 1136. The princes did not rule everywhere, the Novgorod Veche Republic, huge in area, was ruled by the mayor.
Orthodoxy.
Stone architecture and architectural ensembles in a number of cities (Kiev, Novgorod, Suzdal, Vladimir-on-Klyazma).
Dynastic marriages with Byzantium, France, Hungary.
Types of jewelry art – enamel, filigree, granulation.
Chronicle.



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