What led to a large population gap between the north and south? cotton plantations attracted massive amounts of workers. new factory jobs attracted millions of immigrants. large numbers of people were moving from the north to south for the warmer weather.

New factory jobs attracted millions of immigrants.

The North developed to be the factory power house of the USA, as early as colonial days.The main reason for this is becasue the physical environment of the North such as fast running rivers favored industries. This attracted more people into the area, who were looking for better opportunities.

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.