How did the growing wave of immigration affect the rise of political machines? political bosses gave little to newly arrived immigrants because they could not vote. political bosses were often nativists who encouraged restrictions on immigration. political bosses forced immigrants to leave their wards to protect neighborhood jobs. political bosses expanded their power by immigrants in return for their loyalty.

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.

Ithink it is called reservation