Complex sentence: As of 2012, the United States has the world's largest prison population, with over 2.3 million people in American prisons or jails--up from 744,000 in 1985--meaning 1 in every 100 American adults are in a prison.
Split into simpler sentences: As of 2012, the United States has the world's largest prison population, with over 2 million people in American prisons or jails--up from 744,000 in 1985. In 2012, the United States prison population was estimated at over 2.3 million prisoners, meaning 1 in every 100 American adults are in a prison.