Some 9-11 World Trade Center queries

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I'm just watching the movie - World Trade Center - on TV and was wondering if someone could answer some queries or point me to a site that does give some facts. 1. How many hours apart did the 2 planes crash 2. How long after the crash did the buildings fall 3. How many people actually dies in the catastrophe I know these look like just statistics, but it will help me understand the depth of the terrorist attack and the impact. Thanks.