What increased the number of deaths during the Triangle Shirtwaist fir?

The number of deaths during the Triangle Shirtwaist Factory fire was significantly increased by several factors, including locked exit doors that prevented workers from escaping, inadequate fire safety measures, and the rapid spread of flames fueled by highly flammable materials. Additionally, the building's design, which included a lack of proper fire escapes and insufficient access to fire exits, compounded the tragedy. The event highlighted the urgent need for improved workplace safety regulations.