What is the most logical reason why native americans followed quanah parker and isa-tai? a) quanah parker and isa-tai promised them extensive land treaties b) native americans feared the government, and thought these men could protect them. c) native americans hoped and believed quanah parker and isa-tai could lead a successful escape. d) native americans were threatened with punishment if they did not follow suit.

I believe it's A. 

Hope this helps

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.