Special in september...?

Talking about september.... what comes in your mind when people are talking about september?
For me, of course I will think about tragedy September 11...still remember about it?

According to the internet....

'' The September 11 attacks (often referred to as 9/11) were a series of coordinated suicide attacks by al-qaeda upon the USA on September 11,2001. On that morning, terrorists affiliated with al-Qaeda four commercial passenger jet airlines. The hijackers intentionally crashed two of the airliners into the Twin Towers in New York City.., killing everyone on board and many others working in the building, causing both buildings to collapse within two hours, destroying at least two nearby buildings and damaging others. ''

The September 11 attacks had destroy the Pentagon... United State believe that the attacks was done by Al-Qaeda terrorist....may be ..i don't think so...there was no evidence that can relate the attacks with the terrorist...is it true that the terrorist group are exist..or it only a trick that used to find any excuse for USA to attack Iraq...perhaps?

There are so many questions exist with any single answers...why...? Waallahualam..