Why is March 25, 1911, one of the most important date in labor history?

A. It is when economy significantly turned around for the next century.
B. It is when one of the largest industrial accidents in the United Sates occurred.
C. It is when the labor law changed significantly.
D. It is when labor equality became a definitive policy.

B. It is when one of the largest industrial accidents in the United States occurred.

On March 25, 1911, the Triangle Shirtwaist Factory fire took place in New York City. This tragic event resulted in the deaths of 146 garment workers, mostly young immigrant women. It was a turning point in labor history as it highlighted the dangerous working conditions and lack of safety regulations in factories at that time. The fire prompted widespread outrage and led to significant changes in labor laws and workplace safety regulations, making it a significant date in labor history.