What did the fire at the Triangle Shirt-waist Factory in New York lead to?

On March 25, 1911, the Triangle Shirtwaist Company factory in New York City burned, killing 145 workers.The tragedy brought widespread attention to the dangerous sweatshop conditions of factories, and led to the development of a series of laws and regulations that better protected the safety of workers.

Explanation:

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answer; /// i do believe that the correct answer is (a); a farming tribe that settled primarily along the mississippi and arkansas rivers;

d is the answer. leo should include the source.