8. The author is primarily concerned with
showing that a certain interpretation is better supported by the evidence than is an alternative explanation
developing an alternative interpretation by using sources of evidence that formerly had been unavailable
questioning the accuracy of the evidence that most scholars have used to counter the author s own interpretation
reviewing the evidence that formerly had been thought to obscure a valid interpretation
presenting evidence in support of a controversial version of an earlier interpretation.
9. According to the author, changes in the conditions of international trade resulted in an
underestimation of the amount of new land that was being famed in the United States
underutilization of relatively small but rich plots of land
overexpansion of the world transportation network for shipping agricultural products
extension of agrarian depressions beyond national boundaries
emphasis on the importance of market forces in determining the prices of agricultural products
10. The author implies that, after certain territories and countries had been joined into an interdependent market system in the nineteenth century, agrarian depressions within that system
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