Greece

When I was watching the video about ancient Greece, I found it very interesting that the marathon was really originated in ancient Greece. All of that running and he got nothing for it! That is very weird, I mean no water, food or at least a pat on the back? Come on! I want to know what really happened in this story. Also why was king Xerxes on the gold chair? I believe that people should have had a  bow and arrow and just killed the guy and not let him go. I would have just shot him first. I was wondering, how easy would it be if we had the weapons that we have today and how they would fare against these people...