Final answer:
The U.S. economy went into a brief recession immediately after World War I ended, but soon entered a decade-long boom known as the Roaring Twenties.
Step-by-step explanation:
Immediately after World War I ended, the U.S. economy entered a brief recession. The war had led to an increase in government spending, which stimulated the economy. However, once the war ended, the government scaled back its spending, causing a decline in economic activity. This resulted in a temporary downturn before the economy eventually began a decade-long boom known as the Roaring Twenties.
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