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For the past 100 years, the immense stretch of barren American desert has been growing smaller. Three generations ago, the wasteland extended from the Mississippi Valley in the east almost to the Pacific Coast. But men learned that the prairies could grow maize and that the grass lands could feed cattle and sheep or yield wheat. As they continued to cultivate the desert, the size of the desert area decreased.
Today, there are still 60 to 70 thousand square miles of desert. In the 600 miles between Salt Lake City and Reno, Nevada, there is nothing but dead lakes, dry rivers, snakes and small animal life, enormous mineral wealth, and the inhuman beauty of the desert.
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As they continued to cultivate the desert …
the size of the fertile lands decreased
the wasteland extended
the size of the desert area extended
the size of the desert area decreased