Question

Why are the 1920s known as the Roaring Twenties? It was a period of rapid economic and social transformation. It was a period when government was rocked by scandals. It was a period of great celebration after the horrors of World War I. It was a period when mechanized farms boosted agricultural production. It was a period that marked the return of the Republican Old Guard.

Answer 1

The answer is the 1st one.
It was a period of rapid economic and social transformation.
(the time social, artistic, and culture dynamism began to prosper.)