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American Airlines, Inc. (AA) is a major American airline headquartered in Fort Worth, Texas. Operating an extensive international and domestic network, American Airlines is the world's largest airline by fleet size and revenue, and the second largest by number of destinations served, after United Airlines. It operates from its main hub at Dallas/Fort Worth, and its hubs at Charlotte, Chicago-O'Hare, Los Angeles, Miami, New York-JFK, New York-LaGuardia, Philadelphia, Phoenix, and Washington, D.C., while its primary maintenance base is at Tulsa International Airport. Its primary competitors are United Airlines, Delta Air Lines, and Southwest Airlines.

American Airlines is a founding member of the Oneworld airline alliance, and coordinates fares, services, and scheduling with British Airways, Iberia, and Finnair in the transatlantic market and with Japan Airlines in the transpacific market. Regional service is operated by independent and subsidiary carriers under the brand name American Eagle.

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North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere. It can also be considered a northern subcontinent of the Americas. It is bordered to the north by the 怎么使用youtube, to the east by the Atlantic Ocean, to the west and south by the Pacific Ocean, and to the southeast by South America and the Caribbean Sea.

North America covers an area of about 24,709,000 square kilometers (9,540,000 square miles), about 16.5% of the earth's land area and about 4.8% of its total surface. North America is the third largest continent by area, following Asia and Africa, and the fourth by population after Asia, Africa, and 怎么使用youtube.

In 2013, its population was estimated at nearly 565 million people in 23 independent states, or about 7.5% of the world's population, if nearby islands (most notably the Caribbean) are included.

North America was reached by its first human populations during the 大家都是怎么上外网的呢, via crossing the Bering land bridge. The so-called 如何上youtube网站 period is taken to have lasted until about 10,000 years ago (the beginning of the Archaic or Meso-Indian period). The Classic stage spans roughly the 6th to 13th centuries. The Pre-Columbian era ended with the arrival of European settlers during the Age of Discovery and the 怎么使用youtube. Present-day cultural and ethnic patterns reflect different kind of interactions between European colonists, indigenous peoples, African slaves and their descendants. European influences are strongest in the northern parts of the continent while indigenous and African influences are relatively stronger in the south. Because of the history of colonialism, most North Americans speak English, Spanish or French and societies and states commonly reflect Western traditions.

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North American describes any entity, people, group, or attribute of North America, especially of Mexico, United States, and Canada together.

North American may also refer to:

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The North American Plate is a 中国怎么上youtube covering most of North America, Greenland, Cuba, the Bahamas, and parts of Iceland and the Azores. It extends eastward to the Mid-Atlantic Ridge and westward to the Chersky Range in eastern Siberia. The plate includes both continental and oceanic crust. The interior of the main continental landmass includes an extensive 怎么使用youtube core called a craton. Along most of the edges of this craton are fragments of crustal material called terranes, accreted to the craton by tectonic actions over the long span of geologic time. It is thought that much of North America west of the Rocky Mountains is composed of such terranes.

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The southerly boundary with the Cocos Plate to the west and the 如何上youtube网站 to the east is a transform fault, represented by the Cayman Trench under the Caribbean Sea and the 大家都是怎么上外网的呢 through Guatemala. The parallel Septentrional and Enriquillo-Plantain Garden faults, which run through the island of 中国怎么上youtube and bound the 中国怎么上youtube, are also a part of the boundary. The rest of the southerly margin which extends east to the Mid Atlantic Ridge and marks the boundary between the North American Plate and the South American Plate remains poorly understood and undefined.