List and briefly describe each of the main eras of corrections, including the timeframes covered, how that era addressed corrections/offenders, and what made us move on to the next era. Identify and discuss the main goals of sentencing/corrections. How have political and social movements impacted the goals of sentencing/corrections and the current era that we are in? Identify one specific political and one specific social movement from the last 2 years, and discuss how it has impacted the field of corrections.