Why aren't we taught about wtc building 7?

There isn't to much we know about it accept when it was built and who was the architect that designed it and there also is no reason of why it collapsed the rest is just a conspiracy.

The second , larger puritan colony of massachusetts bay was conceived as a "city upon a hill". but it also struggled with internal turmoil like the salem witch trials and external conflicts like king philip's (metacom's) war.