Answer:
Option D, often earned wages insufficient to support their families adequately, is the right answer.
Explanation:
In order to recover the economy, the United States encouraged the factory system and underwent the Industrial Revolution. Though all the output came from the machines, the owners required workers to operate the machines. Since lots of people were unemployed, they usually accepted to work at low wages. Sometimes the wage was so low that the workers failed to support their families.
The main cause of the second industrial revolution was, natural resources, abundant labor supply, strong government policy and new sources of power.
North america and it took place on the Atlantic <span />
