Iraq War Help

Hello, all. I have newly been assigned to do an essay on the Iraq War. However, I know little about the war as I am Canadian and really didn't care what was going on. But now I need to know that kind of stuff. So I come to you with this simple question: Will you help me understand the reasons for the Iraq War?

Please help as without your aid I am not exactly sure what to do

Try reading throught the wikipedia articles to see what you can find.
Iraq war (disambiguation)

Try looking into the fact that though results may end up being for the better, the motives behind the war are false and misleading.

This thread may be of interest.
Link