September-11 terrorist attack

Definition

The September-11 terrorist attack refers to the series of coordinated attacks carried out by the extremist group Al-Qaeda on September 11, 2001, in which hijackers crashed commercial airplanes into the World Trade Center towers in New York City and the Pentagon in Arlington, Virginia.

Related terms

Homeland Security Department: This term refers to the government agency created after the September-11 terrorist attack to coordinate national efforts against terrorism and ensure domestic security.

Al-Qaeda: This term refers to the extremist group responsible for planning and executing the September-11 terrorist attack.

Terrorism: This term refers to acts of violence or intimidation carried out by individuals or groups with political or ideological motives aimed at instilling fear in a population.