And the event led to the invasion of Afghanistan, and made Osama bin Laden the most famous Arabian to ever walked the Earth. His name resonated fear in the minds of those who feared him, and people dubbed him "The Devil Himself" for inflicting such wound upon the United States of America.
Unfortunately, America's understanding of the Abrahamic religion didn't improve however exiguous at all. A recent article on TIME mentioned that even after ten years of war against terror, American politicians still know astonishingly little about the religion they are up against. They were proud to know there were Sunni Muslims and Shia Muslims, but nothing more than that. So, in a way, the Americans were basically shooting at an immortal behemoth, one that will never die unless they know its weaknesses.
And to quote from the master of war, Sun Tzu:
If you know your enemy and know yourself, you can win a hundred battles without a single loss.
If you only know yourself, but not your opponent, you may win or may lose.
If you know neither yourself nor your enemy, you will always endanger yourself.
As for those who'd lost their loved ones in the tragedy, it's been a rough roller coaster ride. First, President Bush announced that he would hunt down and punish whoever that's responsible for the cowardly act. But bin Laden was harder to hunt down than he'd ever imagined. Then his fighter jets flew offcourse into Iraq, so he turned his attention to Saddam Hussein before he made his infamous "Mission Accomplished" speech in 2003. Saddam, it seemed, was just a scapegoat for his failure to uphold his promise of capturing bin Laden.
Bin Laden was killed during a Navy Seal operation in May 2011, and every soul in America listened raptly to Obama's speech on the death of the Godfather of Terror and then celebrated wildly on the street. But every man and woman in CIA and FBI knows that the war against terror will not cease until America addresses the anger lurking within the Arabian Peninsular.
A important legacy of this event is that we can never underestimate religion's capability for violence. A seemingly warm and welcoming religion, however noble it is, can always be distorted and twisted to accommodate any individual's personal agenda.