Historians attempt to answer the a0, a1, a2, a3, and a4 questions of history.

Historians attempt to answer the  

who

a0,  

what

a1,  

when

a2,  

where

a3, and  

where

a4 questions of history.

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.