Which identifies the impact of the Triangle Shirtwaist fire on labor conditions?

1) Fewer locations were available to produce garments.
2) Better building safety codes and other worker protections were adopted.
3) Fire companies were subjected to regulation under municipal codes.
4) Textile employees unionized and fought for better labor conditions.

I belevie the answer is either 2 or 4 but In my reading there was no mention of saftey codes or worker protections being adopted,so I am unsure of 2.

2 answers

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anybody know the answer