When was 911 happen?

Answer 1

The September 11 attacks, commonly referred to as 9/11, occurred on September 11, 2001. On that day, terrorists from the extremist group al-Qaeda hijacked four commercial airplanes, crashing two into the Twin Towers of the World Trade Center in New York City, one into the Pentagon in Arlington, Virginia, and the fourth, United Airlines Flight 93, into a field in Pennsylvania after passengers attempted to overcome the hijackers. The attacks resulted in significant loss of life and had a profound impact on U.S. and global security policies.