Why did many families in the Industrial Revolution rely on child labor?

Children of poor and working-class families had worked for centuries before industrialization – helping around the house or assisting in the family’s enterprise when they were able. The practice of putting children to work was first documented in the Medieval era when fathers had their children spin thread for them to weave on the loom. Children performed a variety of tasks that were auxiliary to their parents but critical to the family economy. The family’s household needs determined the family’s supply of labor and “the interdependence of work and residence, of household labor needs, subsidence requirements, and family relationships constituted the ‘family economy'”

Explanation:

increase in population