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Grand Canyon Arizona USA |
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A gorge of the Colorado River in northwest Arizona. It is up to 1.6km (1m) deep, from 6.4 to 29 km (4 to 18 mi) wide, and more then 321.8 km (200 mi) long. The eroded walls of the canyon record many centuries of geologic time. |
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A state of southwest United States on the Mexican border. It was admitted as the 48th state in 1912. First explored by the Spanish in 1539, the area was acquired by the United States in 1848 through the Treaty of Guadalup Hidalog. Phoenix, is the capital and largest city, Population, 3,677,900+
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