What happened at the triangle shirtwaist factory in 1911?

In 1911, a devastating fire broke out at the Triangle Shirtwaist Factory in New York City, resulting in the deaths of 146 garment workers, most of whom were young immigrant women. The fire, exacerbated by locked exit doors and inadequate safety measures, trapped many workers inside. This tragedy highlighted the dangerous working conditions in factories and sparked significant labor reforms, leading to improved safety regulations and labor rights in the United States. The incident remains a pivotal moment in the history of labor activism.