Child labor or child slavery?

Child labor existed prior to the Progressive Era. After industrialization, many poor families sent their children to factories to work. Many children died from poor working conditions and hazardous equipments. The average age of child labor was four to sixteen years old. Many of these children did not go to school at all. During the progressive era four constitutional amendments were passed. One of these amendments outlawed child labor. The Progressive movement did succeed in creating safer work standards for all, and enacting age limits and work hour limits.