Which economic development characterized the United States in the 1920s?

• A. Organized labor established a solid foothold in major manufacturing industries
• B. The rise of mass consumerism led to increased production and consumption
• C. Government spending helped prevent joblessness throughout the decade
• D. The personal savings accumulated during World War I provided the basis for general prosperity

Answer: (B)

The main idea here is how the 1920s economy shifted toward mass production fueled by a growing culture of consumer buying. Innovations in manufacturing, especially assembly-line techniques, lowered costs and made goods like automobiles affordable to many Americans. As more people could buy durable goods, manufacturers responded by increasing output, creating a cycle of rising production and rising consumption. This era also saw new financing methods—installment plans and easier credit—that let people purchase items even if they didn’t have cash on hand, further fueling the boom. Advertising and new media reinforced a mindset of modern, stylish living centered on consumer goods, making mass consumerism the defining economic force of the decade.

This is why the rise of mass consumerism leading to increased production and consumption is the best description. The other options don’t fit as well: organized labor didn’t establish a solid foothold across major industries during this period; government spending did not systematically prevent unemployment throughout the decade; and prosperity wasn’t based on WWI-era savings, since consumer credit and rapid production were the primary engines of growth in the 1920s.