Which type of change—political, social, or economic—had the most impact on Southern life? Which type of change—political, social, or economic—faced the most challenges? Why were Southerners against this type of change? For the first hundred years of the United States, only white males were able to vote. Since then, amendments to the Constitution have made it so that any citizen aged 18 or older can vote. Which amendments granted different groups the right to vote? Why were amendments needed to expand voting rights?

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.