Is this your homework? If so, why do you expect people to do it for you?

I hate to say it, but this sounds like you want people here in the forum to research an assignment for you. What I suggest you do is this: Do your own research into this subject (the internet is just teeming with information like this). Write the paper, then submit it in the Notebook section, where I (and other members) will be glad to check the grammar and spelling and correct it for you. Which, after all, is our main purpose here. Good luck on your research. (I mean that sincerely)