The option that would have been most useful to counter the argument made by Debow is A. A breakdown of the total value of exports from the United States to Europe.
Debow's Review was simply an article about commercial, agricultural, and industrial progress and resources in the nineteenth century.
The statistics from 1820 to 1860 that would have been most useful to counter the argument that was made by him will be a breakdown of the total value of exports from the United States to Europe.
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