What actually happened on 9/11 and why? (A question to conspiracy theorists)?

Question

What is the conspiracy theory behind 9/11?

Answer 1

6 Debunked 9/11 Conspiracy Claims From Today's NIST Report

By Arianne Cohen

Published on: August 21, 2008  

Answer 2

bush was involved seeing as bin laden and his family had recently been spotted and in good speaking terms with bush. bush needed a reason to go to the middle east in order to get more oil

Answer 3

The conspiracy theory has just been solved.

The heat due to the fire caused the expansion of the steel structure. That expansion caused the collapse of the buildings.