Read this: With such a high percentage of children working, the rising of illiteracy, and the lack of a formal education became a widespread issue for many children who worked to provide for their families. Due to this problematic trend, many parents developed a change of opinion when deciding whether or not to send their children to work. Other factors that lead to the decline of child labour included financial changes in the economy, changes in the development of technology, raised wages, and continuous regulations on factory legislation.
Now answer this question, if there is an answer (If it cannot be answered, return "unanswerable"): What are the reasons that lead to a decline of child labour?
financial changes in the economy, changes in the development of technology, raised wages, and continuous regulations on factory legislation