Americans realized that business was not immune to failure and could collapse.
Explanation:
In this passage, the author talks about the impact that the failure of businesses had on Americans and their view of their country. He tells us that before the crash, Americans trusted and believed in the continuity of business. However, after this period, they realized that business was not immune to failure. The passage does not mention anything about new industries, the role of business owners or the ethics of business.
