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Chicago (/ʃɪˈkɑːɡoʊ/ (listen) shih-KAH-goh, locally also /ʃɪˈkɔːɡoʊ/ shih-KAW-goh) is the most populous city in the U.S. state of Illinois and the third-most populous in the United States, after New York City and Los Angeles. With a population of 2,746,388 in the 2020 census, it is also the most populous city in the Midwest. As the seat of Cook County (the second-most populous U.S. county), the city is the center of the Chicago metropolitan area, one of the largest in the world.

On the shore of Lake Michigan, Chicago was incorporated as a city in 1837 near a portage between the Great Lakes and the Mississippi River watershed. It grew rapidly in the mid-19th century; by 1860, Chicago was the youngest U.S. city to exceed a population of 100,000. The Great Chicago Fire in 1871 destroyed several square miles and left more than 100,000 homeless, but Chicago's population continued to grow to 503,000 by 1880 and then doubled to more than a million within the decade. The construction boom accelerated population growth throughout the following decades, and by 1900, less than 30 years after the fire, Chicago was the fifth-largest city in the world. Chicago made noted contributions to urban planning and zoning standards, including new construction styles (such as, Chicago School architecture, the development of the City Beautiful Movement, and the steel-framed skyscraper).

Chicago is an international hub for finance, culture, commerce, industry, education, technology, telecommunications, and transportation. It is the site of the creation of the first standardized futures contracts, issued by the Chicago Board of Trade, which today is part of the largest and most diverse derivatives market in the world, generating 20% of all volume in commodities and financial futures alone. O'Hare International Airport is routinely ranked among the world's top six busiest airports according to tracked data by the Airports Council International. The region also has the largest number of federal highways and is the nation's railroad hub. The Chicago area has one of the highest gross domestic products (GDP) in the world, generating $689 billion in 2018. The economy of Chicago is diverse, with no single industry employing more than 14% of the workforce. It is home to several Fortune 500 companies, including Archer Daniels Midland, Conagra Brands, Exelon, JLL, Kraft Heinz, McDonald's, Mondelez International, Motorola Solutions, Sears, and United Airlines Holdings.

Qusong County, which belongs to Shannan City, Tibet Autonomous region, is located between 92 °7 degrees east longitude and 92 °12 degrees east longitude and 29 °18 degrees north latitude and 29 °42 degrees north latitude. It is located on the north side of the Himalayas, the south bank of the middle reaches of the Brahmaputra River, Sangri County in the north, Longzi County in the south, Jiacha County in the east and Nai Dong District in the west. Qu Song means "three Rivers" in Tibetan. Because the Sebu River, Jiangza River and Gongbu River run through the county, the Tibetan translation of the three rivers is "Qusong", hence the name of Qusong County. As of 2011, there are 16309 people in Qusong County, with a total area of 1967 square kilometers, with an average elevation of more than 4200 meters, and the county seat Zhuokang 3896 meters above sea level. Agriculture is the main economy. As of 2014, the gross national product of Qusong County has reached 489 million yuan. October 2018, West
Travel Sights In Qusum County
Travel Notes In Qusum County
Go, drive Tibet by yourself! (10)
Today is April 15th, the tenth day of self-driving Tibet. Today's plan is to start from Lang County, visit the ruins of the Lagari Palace via Qusong,
Travel Asks In Qusum County
Travel Asks In Qusum County