Final answer:
The Triangle Shirtwaist Factory Fire in 1911 led to the deaths of 146 workers, primarily immigrant women, due to safety issues.
Explanation:
The Triangle Shirtwaist Factory Fire of 1911 resulted in the tragic deaths of 146 workers, mostly young immigrant women, due to unsafe working conditions. The locked doors, inadequate fire escapes, and short firefighter ladders all contributed to the high casualty count.
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