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.

a side effect of a good or service generating benefits or costs to someone who doesn’t decide how much to produce or consume

Explanation:

Externality is a microeconomic concept that aims to explain the positive or negative impact that an economic activity has on third parties. If by exercising an economic activity, a company indirectly benefits society or community, the externality is positive. If economic activity negatively impacts the surrounding community, externality is said to be negative. For example, the pollution that an industry emits in the production process has deleterious effects throughout society, being a negative externality. Likewise, a truck causes potholes in the road, this is a negative externality, since all citizens' taxes, including most non-truckers, will be used to restore potholes in the roadway.