Christianity/catholicity is probably the most common.
Negative: The Noble Experiment led to increased use of illegal drugs. Bootleg alcohol was sometimes toxic and increasingly expensive. This led many drinkers to switch to opium, cocaine, hair tonic, sterno or “liquid heat,” and other dangerous substances. Thus, Prohibition popularized the use of illegal drugs.
Positive: Wife beating and lack of family support decreased 82%
Drunkenness decreased 55.3%
Assault decreased 53.1%
Vagrancy decreased 52.8%
Disorderly conduct decreased 51.5%
Delinquency decreased 50.0%
Deaths due to cirrhosis decreased 50.0%
There was different effects for it. I'm not sure if your question is free response or multiple choice but some effects were: widening the gap between the rich and poor, making inner cities have even worse conditions, the beatniks rose to counter the middle class lifestyle, schools in suburbs were better than the ones in inner cities