How did the Triangle Shirtwaist Factory get destroyed?

Answer:
The factory, on upper floors of a high rise building, was destroyed by fire, in part because it was not equipped with sprinklers, and because it held lots of flammable materials. The building, however, was not severely damaged.
First answer by Pzavon. Last edit by Pzavon. Contributor trust: 759 [recommend contributor recommended]. Question popularity: 2 [recommend question].