They were put to work
Explanation: Before industrialism children simply helped their parents with the farms, but once factories started appearing labor was the biggest problem, so children were put to work because they could be under paid and mistreated.
the answer is hope this you.
an expansion is one of two basic business cycle phases; the other is contraction. the transition from expansion to contraction is a peak, and the changeover from contraction to expansion is a trough.