What historical factors did the court consider roper v simmons?

In Roper v. Simmons (2005), the Supreme Court considered several historical factors, including the evolving standards of decency that inform the prohibition against cruel and unusual punishment under the Eighth Amendment. The Court examined the historical context of juvenile justice, noting that minors have less culpability due to their immaturity and the potential for change. Additionally, the justices referenced international norms and practices regarding the death penalty for juvenile offenders, highlighting a growing consensus against such punishments. These factors contributed to the Court's decision to declare the execution of individuals who were under 18 at the time of their crimes unconstitutional.