Final answer:
The grim conditions of child labor as described by John Spargo led to the passage of child labor laws, limiting working hours and setting age requirements for workers.
Step-by-step explanation:
The conditions described in the quotation by John Spargo led to the passage of child labor laws. During the Industrial Revolution, children worked long hours in hazardous conditions for minimal pay, sparking public outrage and calls for reform. This public disapproval and the efforts of reformers eventually culminated in legislation to regulate child labor, such as limiting working hours and setting minimum age requirements for workers.
In Great Britain, these developments occurred during the 1830s and 1840s, with Parliament being pressed to limit the working time of child workers. In the United States, significant changes in child labor practices were not fully realized until the 1920s. Such legislation was often met with resistance from families in need of the income, employers in search of cheap labor, and politicians who viewed it as an interference with business and family rights.