The answer is: D. By the end of the 1920s, the top 0.01 percent of the U.S. population earned as much as the bottom 42 percent.
Explanation:
Black Tuesday was the fourth and last day of the stock market crash of 1929.
The 1920s is the decade when America's economy grew 42 percent. Mass production spread new consumer goods into every household. The modern auto and airline industries were born.
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