Which of the following BEST explains why the 1920's were known as the “roaring twenties?" a. Foreign trade prospered after WWI

b. The US assumed a leadership role in world affairs.

c. Political reforms made government more democratic

d. Widespread social and economic change occurred.

D

Explanation:

“The 1920s in the United States, called “roaring” because of the exuberant, freewheeling popular culture of the decade. The Roaring Twenties was a time when many people defied Prohibition, indulged in new styles of dancing and dressing, and rejected many traditional moral standards. ”