Which claim about immigration is best supported by the information in the charts? * A. Northern Europeans were not permitted to enter the United States from 1860 to 1920.
B. The percentage of German immigrants increased between 1860 and 1920.
C. Immigration from the Western Hemisphere declined after 1900.
D. Southern and eastern Europeans made up a majority of immigrants from 1900 to 1920.

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.