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Which of the following statements about keystone species is true?
Economic Depression
A severe and prolonged downturn in economic activity characterized by significant decline in GDP, high unemployment, low spending, and deflation.
Mississippi River
One of the longest rivers in North America, flowing from northern Minnesota to the Gulf of Mexico, and historically significant as a major transport route for trade, especially during the 19th century.
Santa Fe Trail
A historic trade route connecting Franklin, Missouri, with Santa Fe, New Mexico, used during the 19th century.
New Mexico's Commerce
Economic activities and trade occurring within New Mexico, often highlighting its unique position in the southwestern United States and its trade links.
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