Вставьте артикль, где необходимо The Grand Canyon is ... geological and scenic won- der that is known throughout ... world. Located in ... United States in ... Northern Arizona, it is 446 kilo- metres long, up to 29 kilometres wide and has... depth of up to 1.8 kilometres. The Grand Canyon is ... world-famous geological site. ... canyon's walls contain rock layers that expose nearly two billion years of ... Earth's history. Geologic studies began in .. 19th century and continue today. One of ... biggest questions is how ... Colorado River chose its course and began carving ... canyon. ... area contains several major ecosystems and is home to over 1500 plant and over 400 animal species. For thousands of years, ... area has been inhabited by ... Native Americans. In the early 1800s, ... United States government started to send expeditions to explore and map ... canyon. protection in 1893 as ... forest reserve. Later, in 1919, it received national park status. Today . Grand Canyon National Park receives almost five million visitors each year. ​

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The Grand Canyon is a geological and scenic wonder that is known throughout the world. Located in the United States in Northern Arizona, it is 446 kilometers long, up to 29 kilometers wide and has a depth of up to 1.8 kilometers. The Grand Canyon is a world-famous geological site. The canyon's walls contain rock layers that expose nearly two billion years of Earth's history. Geologic studies began in the 19th century and continue today. One of the biggest questions is how the Colorado River chose its course and began carving the canyon. The area contains several major ecosystems and is home to over 1500 plant and over 400 animal species. For thousands of years, the area has been inhabited by Native Americans. In the early 1800s, the United States government started to send expeditions to explore and map the canyon. The protection in 1893 as a forest reserve. Later, in 1919, it received national park status. Today, the Grand Canyon National Park receives almost five million visitors each year.

Explanation:
1. "The" - "The Grand Canyon" is a specific and well-known landmark, so "the" is used to indicate this particular place.
2. "the" - "the world" refers to the entire world, so "the" is used to indicate it.
3. "the" - "the United States" is a specific country, so "the" is used to indicate it.
4. "Northern" - "Northern Arizona" is a specific region within Arizona, so "Northern" is used to indicate it.
5. "a" - "a depth" refers to a general and unspecified depth, so "a" is used.
6. "a" - "a world-famous geological site" refers to a general and unspecified site, so "a" is used.
7. "the" - "the Earth's history" refers to the history of the Earth, so "the" is used.
8. "the" - "the 19th century" refers to a specific century, so "the" is used.
9. "the" - "the Colorado River" is a specific river, so "the" is used to indicate it.
10. "the" - "the canyon" refers to the specific canyon mentioned earlier, so "the" is used.
11. "an" - "an area" refers to a general and unspecified area, so "an" is used.
12. "the" - "the Native Americans" refers to a specific group of people, so "the" is used to indicate them.
13. "the" - "the United States government" is a specific government, so "the" is used to indicate it.
14. "the" - "the canyon" refers to the specific canyon mentioned earlier, so "the" is used.
15. "a" - "a forest reserve" refers to a general and unspecified reserve, so "a" is used.
16. "in" - "in 1893" indicates the specific year in which the protection happened.
17. "in" - "in 1919" indicates the specific year in which the national park status was received.
18. "the" - "the Grand Canyon National Park" is a specific park, so "the" is used to indicate it.
19. "each" - "each year" refers to every year, so "each" is used.