Which of these illustrates Rome's legacy in our modern world? Languages based on Greek are still spoken in former parts of the Roman Empire.
The Orthodox Church has moved its center to the city of Rome.
Many of the Romans' aqueducts and roads are still in use today.
The clothes we wear today are based on Roman designs.

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.