1. what demographic shift caused the african american population of harlem to grow rapidly in the early-1920s? the move to the sun belt the move to the rust belt suburban sprawl great migration 2. who wrote their eyes were watching god, usually considered that person's finest work? billie holiday duke ellington langston hughes zora neale hurston

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.