Ow did the differences in Persian and Greek political and military organization determine the course of the Persian Wars?

First of all, I want to thank everyone ahead of time who will be working on this essay.You all are wonderful.
This essay should include at the very minimum, mention and discuss Sparta, Athens, Persia, hoplite warfare, the Persian Imperial Army, Marathon, Thermopylae, Salamis, Plataea, the consequences of the Persian Wars and why it led to the rise of Western Civilization,the Greek polis and how the Greeks responded to the Persian threat. But all of these are just the minimum. What I would like is for the essay to answer the paper topic…How did the differences in Persian and Greek political and military organization determine the course of the Persian Wars?while including the necessary above important parts, but not being all over the place. I hope this all makes sense. I would like this essay to be at a senior h.s./freshman college level but I dont want it sound like I paid for the paper, no big words or something like that, and I would appreciate great sources/citations (please use Basically, I want to sound like Iwrote it.
Okay, well I hope all of this make sense. I know you guys can do it. Thanks again, you are the best!!