Serfdom
As with slaves, serfs could be bought, sold, or traded, with some limitations: they generally could be sold only together with land (with the exception of the kholops in Russia and villeins in gross in England who could be traded like regular slaves), could be abused with no rights over their own bodies, could not leave the land they were bound to, and could marry only with their lord's permission. Serfs who occupied a plot of land were required to work for the lord of the manor who owned that land. In return they were entitled to protection, justice, and the right to cultivate certain fields within the manor to maintain their own subsistence. Serfs were often required not only to work on the lord's fields, but also in his mines and forests and to labor to maintain roads. The manor formed the basic unit of feudal society, and the lord of the manor and the villeins, and to a certain extent the serfs, were bound legally: by taxation in the case of the former, and economically and socially in the latter.
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