river 1450 miles (2334 kilometers) long in the southwestern U.S. and northwestern Mexico rising in northern Colorado and flowing southwest into the Gulf of California
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river 600 miles (950 kilometers) long in southern Texas flowing southeast into the Gulf of Mexico
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state of the interior western U.S. partly in the Rocky Mountains; capital Denver area 104,247 square miles (271,042 square kilometers), population 5,029,196
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river 530 miles (853 kilometers) long in central Argentina flowing southeast to the Atlantic