Triangle shirtwaist factory fire

how did the realities of their working lives contrast with their dreams and the promise of opportunity in american?

Better live, is the right answer.

Explanation:

A fire that occurred on 25th March 1911 in the  Greenwich Village, New York City, is known as the Triangle Shirtwaist Factory fire. This fire has been regarded as one of the most infamous incidents in the industrial history of the United States. In this fire, the victims died due to the neglected safety rules and locked doors within the building of the factory. As a result, a total of 146 people died in this accident.

The workers' union established on 5th April 1911, launched a unified protest against the conditions that had led to the fire. This resulted in the enactment of laws requiring upgraded factory safety norms.