Why is "History of United States prison systems" trending?

Wikipedia Overview

Imprisonment began to replace other forms of criminal punishment 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 as early as the first sovereign states. In colonial times, courts and magistrates would impose punishments including fines, forced labor, public restraint, flogging, maiming, and death, with sheriffs detaining some defendants awaiting trial. The use of confinement as a punishment in itself was originally seen as a more humane alternative to capital and corporal punishment, especially among Quakers in Pennsylvania. 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 mainstream of American penal practice. Finally, since the early 1970s, the United States has engaged in a historically unprecedented expansion of its imprisonment systems at both the federal and state level. Since 1973, the number of incarcerated persons in the United States has increased five-fold. Now, about 2,200,000 people, or 3.2 percent of the adult population, are imprisoned in the United States, and about 7,000,000 are under supervision of some form in the correctional system, including parole and probation. Periods of prison construction and reform produced major changes in the structure of prison systems and their missions, the responsibilities of federal and state agencies for administering and supervising them, as well as the legal and political status of prisoners themselves.