The United States has the most prisons in the world in order to house the highest number of incarcerated people in the world. 707 per every 100,000 people can be found in a prison.
Out of every 100 citizens, 3 work in the justice system. 1 in 9 State employees works in corrections.
How this vast prison system evolved is examined by looking back at what there was before modern prisons existed.
Source: CriminalJusticeDegreeHub.com