When and where did 911 happen?

Answer 1

The September 11 attacks, commonly referred to as 9/11, occurred on September 11, 2001, in the United States. Four coordinated terrorist attacks were carried out by the extremist group al-Qaeda, targeting the World Trade Center in New York City and the Pentagon in Arlington, Virginia. A fourth plane, United Airlines Flight 93, was headed for a target in Washington, D.C., but crashed in Pennsylvania after passengers intervened. The attacks resulted in significant loss of life and led to widespread changes in U.S. security and foreign policy.