Right before the 20's started World War I happened, so many of the young men of the world were apart of that war and saw horrific things. So after the war they wanted to forget so they had as much fun and parties as they could.
Psychological experience does not result in physical changes to the nervous system but can still influence
The answer is Doric ionic and Corinthian. Doric is the oldest and plainest
Producers want to charge prices that at least will return all their costs: the cost of production, compensation for the time they and their employees spend on the production, and the cost of material, but in an ideal case they want to charge more so that they can earn profits.