Who was responsible for wtc?

The September 11, 2001, attacks on the World Trade Center (WTC) were carried out by 19 terrorists associated with the extremist group al-Qaeda, led by Osama bin Laden. Al-Qaeda orchestrated the attacks as part of a broader agenda against the United States, citing grievances related to U.S. foreign policy in the Middle East. The attacks resulted in the destruction of the Twin Towers and the deaths of nearly 3,000 people.