The progressives tried to help children by limitng maximum hours of labor and in establishing a minimum age for children to be allowed to work.
There were also mandatory laws in different states for children to attend school.
The Progressives believe that government should take an active participation to solve the problems in a society like poverty, education, woman and children rights, job opportunities and best conditions for living.
It wasn't so much the Civil War, but the expansion of the United States that led to the Civil War, that brought about the Second Industrial Revolution, since this expansion brought a need for massive amounts of railroad materials.
Postclassical. The classical era was antiquity which ended with the fall of Rome. Post means after so postclassical is after the fall of Rome which is the same as medieval.