Answer: feudalism

AnswerCrossword Clue
FEUDALISMSocial order of medieval times.
feudalismThe dominant social system in medieval Europe, in which the nobility held lands from the Crown in exchange for military service, and vassals were in turn tenants of the nobles, while the peasants (villeins or serfs) were obliged to live on their lord's land and give him homage, labor, and a share of the produce, notionally in exchange for military protection
feudalismthe feudal system; a system by which the holding of estates in land is made dependent upon an obligation to render military service to the king or feudal superior