(Encyclopedia) Grand Canyon, great gorge of the Colorado River, one of the natural wonders of the world; c.1 mi (1.6 km) deep, from 4 to 18 mi (6.4?29 km) wide, and 217 mi (349 km) long, NW Ariz. The? (Encyclopedia) Arizona r??z?n?, state in the SW United States. It is bordered by Utah (N), New Mexico (E), Mexico (S), and, largely across the Colorado River, Nevada and California (W); it touches? (Encyclopedia) Native American languages, languages of the native peoples of the Western Hemisphere and their descendants. A number of the Native American languages that were spoken at the time of?