terrorist attacks

I live in America, and as the world knows America has been subject to either attempts at terrorist attacks or executed terrorist attacks. When I talk about this I am directly talking about the event that we call 9/11. A terrible day in our nations history. The motives behind these attacks are various things. One being the hatred of other countries towards us because of our friendship with Israel. Another being the portrayed image that Americans can be jerks and snobby. Further more, my country attempts to prevent terrorist attacks by  using intelligence from our various law agencies to help prevent any attacks. Most of the time this method of prevention works.