Which of the following Arizona cities is closest to the Grand Canyon, which reveals over two billion years of Earth's geological history?

The Grand Canyon is 277 miles long and up to 18 miles wide. The region has been continually inhabited by Native Americans for thousands of years, who established villages inside the canyon and its many caves. It became a national park in the 1880s and in 1908 President Theodore Roosevelt declared the Grand Canyon a National Monument.

Asked by Vasilii Kulev · Last updated 4 years ago · 540.2K views · SOURCE