What does a dientian do?

What is the time from 509 BC through 476 AD? How old is Ra'Zhane Lavita Gathers? What did people travel in greece? Where does the name Andrew come from? What enabled the spanish forces to conquer the Aztec people? What happened in the 10TH AD century BC? What was Cuneiform and why was it important? Which Neolithic Revolution development led to the other three? What is a sentence for precocius? How many wives did Hades have? Was Cleopatra an Egyption? Who were landed aristocracies? Humans first started farming and herding in the Fertile Crescent around? What Spanish conquistador led the conquest of the Aztec? Is kronos both Zeus and chiron's father? What year was Athena the greek goddess born in? What was the purpose of the Trojan War? Who was Minerva's mother? What is the river of hate in greek mythology? What was the city where the Renaissance begin?