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Answer:

On this day in 2001, 19 militants associated with the terrorist group al-Qaeda hijacked four planes in the United States, crashing three into buildings (the fourth crashed in Pennsylvania) and killing more than 3,000 people.

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Answer:

on that day a bunch of terrorist hijacked 4 planed and 2 of the planes hit the world Trade Center and the 2 others crashed somewhere else. in that month Muslims/middle Easterns were the blame for no reason