And since people were still going to drink, an instant market for illegal alcoholic beverages arose overnight.

Alcohol was still legal in Canada and Mexico. This required cooperation for the ‘local’ gangs in the major cities to form networks to import and distribute alcohol in the United States.

Gangs weren’t managed by nice people but lots of $$$ the reward for whomever controlled the network. Just check on Al Capone as a perfect example.

Another case of good intentions leading to a social disaster.

Illegal alcohol was readily available, criminal gangs became stronger and more widespread, ( the Mafia), and none of the problems that alcohol reportedly caused went away.

Nationwide organized crime was the primary result of Prohibition.