sentences:  The Sobornoye Ulozheniye, a comprehensive legal code introduced in 1649, illustrates the extent of state control over Russian society.By that time, the boyars had largely merged with the new elite, who were obligatory servitors of the state, to form a new nobility, the dvoryanstvo.The state required service from both the old and the new nobility, primarily in the military because of permanent warfare on southern and western borders and attacks of nomads.