The correct answer is B) US free trade increased.
An effect of US government policies during the 1920s was that US free trade increased.
The 1920s represented a time of great prosperity for the United States. Indeed, there is a term that identifies these years in America called "the Roaring 1920s." The US industry was running smoothly, people had money or credit, so they could buy many necessary or unnecessary things and this meant more income for the US companies. Those years were the beginning of Mass Culture.
