Roaring twenties was age of political and social change,It lasted from 1920 to 1929 and was followed by the Great depression.
It was the time when more Americans were living in cities than on countryside and US wealth doubled from 1920 to 1929. Due to this economic growth American society became a society of consumers.
The mass consumer culture of 20's also led to economic slowdown. The companies were producing more and offered the goods on easy instalments and this motivated people to spend more and save less and it led to overproduction
Roaring twenties culture was also different from before as women roles has changed. Women had gotten the right to vote and a new liberal young woman emerged whose dressing was more liberal and listened to new form of music called jazz.
Becasue there is more of a risk of people who just coming out of high school will be less responsible than if they were to be 21 and buying those types of beverages.