On September 11, 2001, nineteen terrorists boarded four separate planes. They intended on using the planes as missiles to crash into important US buildings.

Terrorists hijacked and crashed planes into the North and South Towers of the Empire State Building.

The word hijack means to take over something and use it for a different purpose.

Al-Qaeda and the Taliban were two terrorist groups that were responsible for the attacks on September 11, 2001.

Emergency crews that helped evacuate people from the towers included firefighters, police, Red Cross, and helpful citizens.

The passengers on United Airline Flight 93 attacked the terrorists and were able to land the plane safely.

Ground Zero was the name given to the area where the Twin Towers were located in New York City.

George W. Bush was the US President on September 11, 2001.

The Twin Towers were located in the city of Philadelphia.

If you are patriotic, you show love for your country.

On May 1, 2011, Osama Bin Laden was killed in Pakistan by US special forces.