cover image

September 11 attacks

2001 Islamist terror attacks in the United States / From Wikipedia, the free encyclopedia

Dear Wikiwand AI, let's keep it short by simply answering these key questions:

Can you list the top facts and stats about 9/11?

Summarize this article for a 10 years old


The September 11 attacks, commonly known as 9/11,[lower-alpha 4] were four coordinated Islamist suicide terrorist attacks carried out by al-Qaeda against the United States in 2001. That morning, 19 terrorists hijacked four commercial airliners scheduled to travel from the New England and Mid-Atlantic regions of the East Coast to California. The hijackers crashed the first two planes into the Twin Towers of the World Trade Center in New York City, two of the world's five tallest buildings at the time, and aimed the next two flights toward targets in or near Washington, D.C., in an attack on the nation's capital. The third team succeeded in crashing into The Pentagon, the headquarters of the U.S. Department of Defense in Arlington County, Virginia, while the fourth plane crashed in rural Pennsylvania following a passenger revolt. The attacks killed nearly 3,000 people and instigated the multi-decade global war on terror.

Quick facts: September 11 attacks, Location, Date, Target,...
September 11 attacks
Part of terrorism in the United States
Black smoke billowing over Manhattan from the Twin Towers
Rescue workers climb through rubble and smoke at the World Trade Center site, and an American flag flies at left
A portion of The Pentagon charred and collapsed, exposing the building's interior
A fragment of Flight 93's metal fuselage with two windows in the Somerset County, Pennsylvania, forest
Illuminated water falls into 9/11 Memorial south pool at sunset, and glass-clad One World Trade Center with other skyscrapers in the background
DateSeptember 11, 2001; 22 years ago (2001-09-11)
c.8:14 a.m.[lower-alpha 1] – 10:03 a.m.[lower-alpha 2] (EDT)
Attack type
(2,977 victims + 19 al-Qaeda terrorists)
Injured6,000–25,000+[lower-alpha 3]
Perpetratorsal-Qaeda led by Osama bin Laden (see also: responsibility)
No. of participants
MotiveSeveral; see Motives for the September 11 attacks and Fatawā of Osama bin Laden
AccusedKhalid Sheikh Mohammed, Walid bin Attash, Ramzi bin al-Shibh, Ammar al-Baluchi, and Mustafa Ahmad al Hawsawi (see also: United States v. Khalid Sheikh Mohammed, et al.)
Abdelghani Mzoudi (acquitted)

The first impact was that of American Airlines Flight 11, which crashed into the North Tower of the World Trade Center complex in Lower Manhattan at 8:46 a.m.[lower-alpha 5] Sixteen minutes later, at 9:03,[lower-alpha 6] the World Trade Center's South Tower was hit by United Airlines Flight 175. Both 110-story skyscrapers collapsed within an hour and forty-one minutes,[lower-alpha 7] bringing about the destruction of the remaining five structures in the WTC complex and several other nearby buildings. A third flight, American Airlines Flight 77, crashed into The Pentagon at 9:37 a.m., causing a partial collapse. The fourth and final flight, United Airlines Flight 93, flew in the direction of the capital. Alerted to the previous attacks, the passengers retaliated in an attempt to take control of the aircraft, forcing the hijackers to crash the plane in a Stonycreek Township field, near Indian Lake and Shanksville, at 10:03 a.m. Investigators determined that Flight 93's target was either the United States Capitol or the White House.

Within hours of the attacks, the Central Intelligence Agency had determined that al-Qaeda was responsible. The United States formally responded by launching the war on terror and invading Afghanistan to depose the Taliban, which rejected the conditions of U.S. terms to expel al-Qaeda from Afghanistan and extradite its leaders. The U.S.'s invocation of Article 5 of the North Atlantic Treaty—its only usage to date—called upon allies to fight al-Qaeda. As U.S. and NATO invasion forces swept through Afghanistan, al-Qaeda leader Osama bin Laden disappeared into the White Mountains, eluding captivity by Western forces. Although bin Laden initially denied any involvement, in 2004 he formally claimed responsibility for the attacks. Al-Qaeda's cited motivations included U.S. support of Israel, the presence of U.S. military bases in Saudi Arabia and sanctions against Iraq. The nearly decade-long manhunt for bin Laden concluded on May 2, 2011, when he was killed during a U.S. military raid after being tracked down to his compound in Abbottabad, Pakistan. The war in Afghanistan continued for another eight years until the agreement was made in February 2020 for American and NATO troops to withdraw from the country, and the last members of the U.S. armed forces left the region on August 30, 2021, resulting in the return to power of the Taliban.

Not including the hijackers, the attacks killed 2,977 people, injured thousands more and gave rise to substantial long-term health consequences while also causing at least $10 billion in infrastructure and property damage. It remains the deadliest terrorist act in human history as well as the single deadliest incident for both firefighters and law enforcement personnel in the history of the United States, causing the deaths of 343 and 72 members respectively. The loss of life stemming from the impact of Flight 11 secured its place as the most lethal plane crash in aviation history followed by the death toll incurred by Flight 175. The destruction of the World Trade Center and its environs seriously harmed the U.S. economy and induced global market shocks. Many other countries strengthened anti-terrorism legislation and expanded their powers of law enforcement and intelligence agencies. Cleanup of the World Trade Center site (colloquially "Ground Zero") took eight months and was completed in May 2002, while The Pentagon was repaired within a year. After delays in the design of a replacement complex, construction of the One World Trade Center began in November 2006; it opened in November 2014. Memorials to the attacks include the National September 11 Memorial & Museum in New York City, The Pentagon Memorial in Arlington County, Virginia, and the Flight 93 National Memorial at the Pennsylvania crash site.