Match the following. 1. A person belonging to a people or tribe that is not civilized. serf
2. Land held in exchange for service. villein
3. A place where grain is stored. manor
4. A feudal estate. barbarian
5. Person owned by the owner of the land. Could not be sold away from land. vassal
6. One who is a subject of a lord. granary
7. One of the lower class in the feudal system, obligated to the lord, but still free. fief

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The constant presence of diseases or infectious agents within a given geographic area or population group. it may also refer to the usual prevalence of a given disease with such area or group. it includes holoendemic and hyperendemic diseases. a holoendemic disease is one for which a high prevalent level of infection begins early in life and affects most of the child population, leading to a state of equilibrium such that the adult population shows evidence of the disease much less commonly than do children (malaria in many communities is a holoendemic disease). a hyperendemic disease is one that is constantly present at a high incidence and/or prevalence rate and affects all groups equally. so probably family history.