wanneer was nine eleven

The September 11 attacks, commonly known as 9/11, took place on September 11, 2001. On that day, four coordinated terrorist attacks were carried out by the Islamic extremist group al-Qaeda in the United States. Two planes were flown into the Twin Towers of the World Trade Center in New York City, one plane hit the Pentagon near Washington, D.C., and a fourth plane crashed in Pennsylvania after passengers attempted to regain control from the hijackers. This tragic event resulted in nearly 3,000 deaths and is regarded as the deadliest terrorist attack on U.S. soil.