Final answer:
The Law Code of 1649 strengthened the power of the tsar and nobles, further solidifying the feudal system by keeping serfs tied to the land and their noble landlords, thus worsening the plight of the serfs.
Step-by-step explanation:
The Law Code of 1649 was a legal code enacted in Russia under Tsar Alexis Mikhailovich. This code is significant because it strengthened the power of the tsar and nobles. It built upon existing structures of serfdom and further bound peasants to the land and their noble landlords. This legal framework made it extremely difficult for serfs to change landlords or to improve their social and economic conditions. The Law Code of 1649, hence, worked against the interests of serfs, intensifying their burdens and solidifying the feudal system by reinforcing the status quo that privileged the nobility.