What happened in the September 11 2001?

Answer 1

On September 11, 2001, a series of coordinated terrorist attacks were carried out by the extremist group al-Qaeda against the United States. Four commercial airplanes were hijacked; two were flown into the Twin Towers of the World Trade Center in New York City, causing their collapse, while a third hit the Pentagon in Arlington, Virginia. The fourth plane, United Airlines Flight 93, was headed for a target in Washington, D.C., but passengers intervened, leading to its crash in a field in Pennsylvania. The attacks resulted in significant loss of life and prompted widespread global security changes and the initiation of the War on Terror.