Two airplanes hit the Twin Towers.
September 11th, 2001 was believed to be one of the world's most terrible tragedies of the decade. One of the reasons why it was so terrible, was because it was a man made attack, specifically trying to kill as many innocent lives as possible. It also led to a a ongoing war between the U.S and terror.
Osama Bin Laden, leader of Al- Qaeda and responsible for the loss of 2,996 innocent lives. Bin Laden lead the attack and many others on the U.S and our people.
Pentagon after being hit by plane during the attacks.