This chapter examines the development of the juvenile court in the United States, focusing on the social and legal contexts that led to its establishment in 1899. It highlights the role of reformers, particularly the 'child savers,' in addressing youth crime and the inadequacies of existing legal mechanisms for handling young offenders. The influence of significant legal cases, such as Kent v. United States and In re Gault, is also discussed regarding their impact on juvenile justice practices.