The World Trade Center (WTC) was a 16-acre commercial complex in lower Manhattan
that contained seven buildings, a large plaza, and an underground shopping mall that connected six of the buildings. The centerpieces of the complex were the Twin Towers.
On September 11, 2001, the entire complex was destroyed in a terrorist attack that has
come to be referred to as “9/11.”
The Twin Towers were the tallest buildings in New York City. At 110 stories each,provided nearly 10 million square
feet of office space for about 35,000 people and 430 companies. For a brief period
upon their completion in 1973, they were the tallest buildings in the world. They
attracted roughly 70,000 commuters and tourists daily.
"9/11" is shorthand for four coordinated terrorist attacks carried out by al-Qaeda, an
Islamist extremist group, that occurred on the morning of September 11, 2001.
The attacks killed 2,977 people.
On the morning of September 11, 2001, 19 terrorists from al-Qaeda, hijacked
four commercial airplanes, deliberately crashing two of the
planes into the upper floors of the North and South towers of the World Trade Center
complex and a third plane into the Pentagon in Arlington, Va. The Twin Towers
ultimately collapsed because of the damage sustained from the impacts and the
resulting fires. After learning about the other attacks, passengers on the fourth
hijacked plane, Flight 93, fought back, and the plane was crashed into an empty field in western Pennsylvania about 20 minutes by air from Washington, DC.
Al-Qaeda is an international Islamist extremist terrorist network founded in the late
1980s by Osama bin Laden, who was killed in a U.S. military operation on
May 1, 2011, and others who were involved in the war against the Soviet Union in
Afghanistan. Their aim has been to overthrow governments in the Middle East, and
elsewhere in the Muslim world, which do not strictly enforce a religiously-sanctioned
political and social order. Attacks against the United States were intended to reduce
American support for many of these governments; U.S. support was viewed by
al-Qaeda as a major obstacle to creating a global order under Islamic authority.
They have claimed responsibility for numerous terrorist attacks since the early 1990s,
including the 1998 U.S.Embassy bombings in Kenya and Tanzania, the 2000 attack on
the USS Cole, and the 9/11 attacks. They have also aligned themselves with and
inspired other terrorist groups who have carried out attacks,including the 2002 Bali
bombing, the 2004 Madrid train bombing, the 2005 London bombings, and the
2008 Mumbai terrorist attacks, among many others.
The terrorists did not have the capacity to destroy the United States militarily, so they
set their sights on symbolic targets instead. The Twin Towers, as the centerpieces of
the World Trade Center, symbolized globalization and America’s economic power and prosperity.
The Pentagon, as the headquarters for the U.S. Department of Defense, serves as a
symbol of American military power. It is thought that Flight 93 was headed to the
Capitol building, the center of American legislative government.
Al-Qaeda hoped that, by attacking these symbols of American power, they would
promote widespread fear throughout the country and severely weaken the United States’
standing in the world community, ultimately supporting their political and religious goals in the Middle East and Muslim World.