1. In the minds of some, what was the time between the Civil War and the early 1900s known as?
2. How does author Otto Bettman attempt to shatter the misconception of this era, and what is the result?
3. What was pollution misunderstood to be in the time after the Civil War?
4. Which animals were a big contribution to air pollution in large cities like New York in the late 19th century?
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