Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2027 exam
Verified for the 2027 exam•Written by the Fiveable Content Team • Last updated August 2025
Definition
Terrorist attacks on September 11, 2001, targeting the World Trade Center in New York City and the Pentagon in Washington, D.C., which prompted the United States to launch military efforts against terrorism.