What was a major factor that led to the economic boom of the 1920s in the U.S.?

The economic boom of the 1920s in the U.S. was significantly driven by the expansion of consumer credit. This development allowed consumers to purchase goods and services on credit, making products more accessible to a broader audience. As a result, spending increased, which fueled demand for manufactured goods and services. This surge in consumer spending was a crucial factor in stimulating economic growth during the decade, leading to the prosperity often referred to as the "Roaring Twenties."

The increase in consumer credit transformed the retail landscape, encouraging people to buy everything from automobiles to household appliances, thus promoting industrial growth. Businesses responded to this heightened demand by increasing production and expanding their operations, which in turn created jobs and stimulated further economic activity.

In contrast, increased government regulation would likely have stifled economic growth during this period, and a decrease in industrial production would not support an economic boom. Similarly, while unionization played a role in labor movements, it was not a major factor in the rapid economic expansion experienced during the 1920s. Overall, the rise of consumer credit was pivotal in propelling the economy forward, enabling the flourishing consumer culture characteristic of the era.