What does it say about the development of the feudal system in Russia?

Social stratification contributed to the beginning of the formation of a feudal society. The feudal system arises as a result of the fact that the ancient Russian princes seized lands, gave them into the possession of their heirs, the squad as payment for service. Over time, plow agriculture became dominant and feudal lords, who saw that the peasants had a good harvest, forced them to pay their quitrent or work out the corvee in various ways.