The correct answer is The U.S. economy had not been destroyed by fighting during World War II
For the United States, the post-World War II period was one of peace and prosperity. The Americans used the money they had saved during World War II to purchase consumer goods that were not available during the conflict. With the subsequent boom in the economy, thousands of people found jobs in the United States. The Americans were making more money and the nation had the highest standard of living in the world.