The correct answer is Experts incorrectly predicted that an economic collapse would follow the end of World War II.
Step-by-step explanation:
Unexpectedly, after the Second World War, the U.S. experienced economic growth and stability. Indeed, after the war ended the general production increased and this led to a higher Gross Domestic Product, more employment, and in general a thriving economy. Also, it was during this period that the U.S. became a leader in terms of economy and trade.
Despite this, most experts never believed this would occur as it was expected the economy would decline after the war. In this context, it can be concluded experts incorrectly predicted after World War II the economy in the U.S. would collapse.