The Roaring Twenties saw a period of economic prosperity in the United States following World War 1. New industries like cars and radio grew thanks to mass production, which made goods more affordable and accessible to common people. However, this rise in consumerism and easy credit led many to take on debts they could not repay, contributing to the Great Depression. Lifestyles also became more modern and focused on leisure, as flappers rejected traditional standards and speakeasies sold illegal liquor despite Prohibition.