How did the Supreme Court decision to throw out laws about children at work help big businesses, which grew under another Supreme Court decision?

Ineed answers 5 and 6 on my social studies homework reply to this question i posted

At the time of the brown v. board of education decision,schools were segregated everywhere in the country.several states had laws requiring segregated schools.schools in nearly every state has been desegregated.segregation was common in the north, but not in the south.

The language and concepts of the petition of rights has been used by the that amend the us constitution reset next