What was the main outcome of the Triangle Shirtwaist Factory fire in 1911?

The main outcome of the Triangle Shirtwaist Factory fire in 1911 was significant reforms in labor laws and workplace safety regulations. This tragic event, which involved the deaths of 146 garment workers due to poor safety standards and inadequate emergency exits, highlighted the dangerous conditions present in many industrial workplaces at the time.

The public outrage that followed prompted lawmakers and advocacy groups to push for reforms aimed at improving worker safety and rights. This led to the establishment of more stringent fire codes and labor laws, including regulations around fire safety, building codes, and working hours. The incident also galvanized the labor movement, encouraging broader support for workers' rights and union organizing.

The other options, while important in the broader context of labor history, were not direct outcomes of the Triangle Shirtwaist Factory fire. Worker cooperatives, Labor Day, and the Knights of Labor represent different aspects of labor organizing and reforms that were influenced by various events and efforts over time, but they do not capture the immediate and direct responses to the conditions revealed by the tragedy of the fire.