why and how greeks win war against persia

i need a research about” why and how greeks win war against persia ?”thermopylae battle , marathon battle , and salamis battle. and mention the three battles and what did happen there.  in ten pages with ten resources.  

 i need it simple , i am an international student so the professor will except from me not a complicate essay and words.  ten pages means the first line on the eleventh page.  

  i need a  worked cited / biography page also