What was the impact of Mansa Musa’s Hajj on the Empire of Mali? a)
it created a connection between Islamic lands and Africa

b)
it established trading networks that increased the wealth of the empire

c)
he promotes Islam making Mali a center of Islamic culture

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.

If this is a true or false question the answer is true.