Answer: States began enacting harsher punishments for young offenders.
Step-by-step explanation:
In the late 1980s and the early 1990s juvenile crime rates saw a significant increase which prompted states to react by imposing stricter punishments for young offenders.
They were able to do this due to a Supreme Court ruling that allowed for juveniles to be provided much of the same due process as adults so in order to deter other young people from crime, states used this ruling to impose those higher punishments.