Why did al-Qaeda attack the World Trade Center?

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. read more

What Al Qaeda was looking for in the bombing of the World Trade Center was chain reactions, he's looking for things that have caused other things. knocking down the twin towers wasn't the goal, it was the means to a goal. read more

On September 11, 2001, 19 militants associated with the Islamic extremist group al-Qaeda hijacked four airplanes and carried out suicide attacks against targets in the United States. Two of the planes were flown into the twin towers of the World Trade Center in New York City, a third plane hit the Pentagon just outside Washington, D.C., and the fourth plane crashed in a field in Pennsylvania. read more