Imprisonment as a form of criminal punishment only became widespread in the United States just before the American Revolution, though penal incarceration efforts had been ongoing in England since as early as the 1500s, and prisons in the form of dungeons and various detention facilities had existed since long before then. Prison building efforts in the United States came in three major waves. The first began during the Jacksonian Era and led to the widespread use of imprisonment and rehabilitative labor as the primary penalty for most crimes in nearly all states by the time of the American Civil War. The second began after the Civil War and gained momentum during the Progressive Era, bringing a number of new mechanisms—such as parole, probation, and indeterminate sentencing—into the mainst