Why were the Thirteenth, Fourteenth, and Fifteenth Amendments added to the Constitution? Select the answer that covers all three amendments. Former slaves needed to understand that they could vote.
The U. S. Civil War pitted two sets of states against each other.
Members of the federal government wanted a wider voting base.
The amendments helped sort out issues after the Civil War to avoid further challenges.

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.