dependent — To be dependent on something or someone means to need them in order to succeed or be able to survive.
helot — a member of the lowest class in ancient Laconia, constituting a body of serfs who were bound to the land and were owned by the state. Compare Perioeci, Spartiate.
liege — a city in E Belgium, on the Meuse River: one of the first cities attacked in World War I.
peasant — a member of a class of persons, as in Europe, Asia, and Latin America, who are small farmers or farm laborers of low social rank.
serf — a person in a condition of servitude, required to render services to a lord, commonly attached to the lord's land and transferred with it from one owner to another.
slave — a person who is the property of and wholly subject to another; a bond servant.
subject — that which forms a basic matter of thought, discussion, investigation, etc.: a subject of conversation.
subordinate — placed in or belonging to a lower order or rank.
tenant — a person or group that rents and occupies land, a house, an office, or the like, from another for a period of time; lessee.