Prison

A prison is a facility where people are held under the authority of a state.

Most often, people are imprisoned as punishment for committing crimes. However, prisons also serve two primary functions within the criminal-justice system. First, they provide pre-trial detention for those awaiting trial. Second, they confine individuals who have been convicted or have pleaded guilty to serve a sentence. In some cases, authoritarian regimes use prisons for political repression. They may detain opponents without due process, which is illegal under most international laws. Additionally, during wars, nations may use military prisons to hold prisoners of war or detainees.

Terminology for these facilities varies significantly across different nations and jurisdictions. In Australia, the terms "gaol," "jail," and "prison" are all common. Historically, "gaol" was the official spelling, and many of these sites, like the Maitland Gaol, are now tourist attractions. In New South Wales and Queensland, the official term is "correctional centre." In Canada, official names include "facility," "penitentiary," or "institution." The United States makes a specific distinction between two types of facilities. A "jail" is typically operated by a local government, such as a county sheriff, and holds people for shorter periods, often less than one year. A "prison" or "penitentiary" is operated by state or federal governments for longer sentences.

The history of imprisonment traces back to the rise of the state as a social organization. In ancient Athens, the prison was known as the desmoterion, meaning "the place of chains." Initially, imprisonment was often used for those who could not pay fines. To prevent indefinite stays, time limits were eventually established. The Romans were among the first to use prisons as a form of punishment rather than just for detention. They used diverse structures, including metal cages, basements, and quarries. One notable example was the Mamertine Prison, established around 640 B.C. by Ancus Marcius. This prison was located in a sewer system beneath Rome and contained dungeons with very poor conditions.

During the Middle Ages, the use of imprisonment changed as power structures evolved. Castles, fortresses, and public basements often served as makeshift prisons. Holding citizens became a way for officials to show their authority and legitimacy. One common punishment during this era was galley slavery. This involved chaining prisoners to the bottoms of ships to row naval or merchant vessels.

In the medieval Songhai Empire, trials could also result in imprisonment or the confiscation of merchandise. While various prisons existed, a regulated, standardized prison system had not yet emerged.

The modern era brought significant shifts in how societies approach punishment. In the late 17th and 18th centuries, public executions and torture became increasingly unpopular. In Britain, the "Bloody Code" imposed the death penalty for even petty crimes like theft. Because many jurors refused to convict people knowing they would face death, rulers sought new methods of control. This led to the development of mass incarceration systems, often involving hard labor. One major innovation was the British system of penal transportation. Between the 1610s and 1776, convicts were sent to British America for indentured servitude. After the American Revolution, Britain resumed transportation to penal colonies in Australia between 1788 and 1868.

During the rise of the modern prison, two contradictory philosophies emerged. The first was deterrence theory, which suggested prisons should be harsh enough to frighten people away from crime. This was influenced by Enlightenment ideas of utilitarianism and rationalism. The second philosophy focused on rehabilitation or moral reform. These reformers viewed crime through a religious lens, equating it with sin. They believed prisons could be humane institutions that instructed prisoners in morality and obedience. The goal was to "correct" behavior so that released individuals could become productive members of society. This period also saw the rise of "houses of correction," such as the Bridewell House of Corrections in London, which used prison labor to shape workers.

In the 20th century, scholars began to study the social impact of these institutions more deeply. The French philosopher Michel Foucault wrote extensively about the birth of the prison system. In his 1975 book, *Discipline and Punish*, he argued that prisons became the primary form of punishment due to cultural shifts in power. He noted that prisons use "disciplines," which are technological powers used to regulate behavior. Foucault observed that these methods could also be found in schools, hospitals, and military barracks. This connection shows how the prison system is part of a broader web of social control and institutional organization.