The WTC has been attacked twice. Once in 1993, with a bomb that didn't do much damage, and in September 2001, which brought the Towers down.
2,799 people died in the wtc attack.
It happened on September 11, 2001. The world trade centers were also previously attacked in 1993.
The WTC attack on 11 September 2001.
The northern WTC tower, then southern WTC tower, then Pentagon and the fourth plane crashed when the patriots inside killed the terrorists but couldn't fly the plane.
The year the terrorists attack was in, was 2001.
The WTC attack on 11 September 2001.
They did not.
The WTC attack occurred on September 11, 2001.
Terrorists attack every ethnic and religious and cultural group, for the same reasons: they wish to cause pain and suffering on anybody not of their clique.
Only one police dog was killed in the attack on the Twin Twers.
Terrorists
There has been no documented terrorist attack on the Sears Tower.