On September 11, 2001, 19 terrorists of Al-Qaeda, then headed by Osama Bin Laden, carried out one of the most dreadful attacks on the United States. The attack left the entire world in shock & fear. Known as 9/11 attacks, the strikes targetted the twin towers of the World Trade Center in New York City and the Pentagon outside Washington DC. Terrorists highjacked four planes to carry out the infamous 9/11 attacks. The world literally witnessed two hijacked planes crashing into the twin towers of the World Trade Center. Nineteen terrorists of Al-Qaeda hijacked four planes. They crashed two aircrafts - United Airlines Flight 175 & American Airlines Flight 11 into the twin tower of the World Trade Center. Although Al-Qaeda, which was founded in Pakistan, claimed the responsibility for the 9/11 attacks, investigations revealed that the hijackers were terrorists belonging primarily to Saudi Arabia. Osama Bin Laden, the co-founder of Al-Qaeda, was named the mastermind of the 9/11 attacks. Their motive behind the attack was said to be America’s support for Israel, the alleged support to the Persian Gulf War. Ten years after the 9/11 attacks, the US Navy Seals killed Osama Bin Laden in Abbottabad city in the Khyber Pukhtunkhwa province in Pakistan. Close to 3,000 people were killed in the 9/11 attacks. The deceased included people from 78 countries.