Answer:
The system had its roots in the Roman manorial system (in which workers were compensated with protection while living on large estates) and in the 8th century kingdom of the Franks where a king gave out land for life (benefice) to reward loyal nobles and receive service in return.
Step-by-step explanation:
Feudal society is a military hierarchy in which a ruler or lord offers mounted fighters a fief (medieval beneficium), a unit of land to control in exchange for a military service. The individual who accepted this land became a vassal, and the man who granted the land become known as his liege or his lord.