The European wheat farmers going out of business was one of the effects of the introduction of corn from North America on the European society. Therefore, the option C holds true.
Corn became a popularly grown and consumed crop of North American region ever since its introduction in the region. The production cost of corn was cheaper than other grains such as wheat, which was predominantly exported to North America by the European farmers.
Since the production of corn had gained a massive growth in the North American region, the European wheat farmers soon started to lose business in the region, and eventually became irrelevant.
Therefore, the option C holds true and states regarding the significance of corn in North America.
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