• Omaha
  • Chenggu

Omaha (/ˈoʊməhɑː/ OH-mə-hah) is the largest city in the U.S. state of Nebraska and the county seat of Douglas County. Omaha is in the Midwestern United States on the Missouri River, about 10 mi (15 km) north of the mouth of the Platte River. The nation's 39th-largest city, Omaha's 2020 census population was 486,051.

Omaha is the anchor of the eight-county, bi-state Omaha-Council Bluffs metropolitan area. The Omaha Metropolitan Area is the 58th-largest in the United States, with a population of 967,604. The Omaha-Council Bluffs-Fremont, NE-IA Combined Statistical Area (CSA) totaled 1,004,771, according to 2020 estimates. Approximately 1.5 million people reside within the Greater Omaha area, within a 50 mi (80 km) radius of Downtown Omaha. It is ranked as a global city by the Globalization and World Cities Research Network, which in 2020 gave it "sufficiency" status.

Omaha's pioneer period began in 1854, when the city was founded by speculators from neighboring Council Bluffs, Iowa. The city was founded along the Missouri River, and a crossing called Lone Tree Ferry earned the city its nickname, the "Gateway to the West". Omaha introduced this new West to the world in 1898, when it played host to the World's Fair, dubbed the Trans-Mississippi Exposition. During the 19th century, Omaha's central location in the United States spurred the city to become an important national transportation hub. Throughout the rest of the 19th century, the transportation and jobbing sectors were important in the city, along with its railroads and breweries. In the 20th century, the Omaha Stockyards, once the world's largest, and its meatpacking plants gained international prominence.

Chenggu County, belonging to Hanzhong City, Shaanxi Province, is located in the hinterland of Hanzhong Basin in southern Shaanxi, with the southern foot of Qinling Mountains to the north, the northern slope of Nanpingba Mountain to the north, and the Hanjiang River in Zhongna to the north. Between longitude 107 °30 'east longitude and 32 °45km north latitude, the terrain is north-south long (average length 101km), east-west narrow (average length 42km), with a total area of 2265 square kilometers. Chenggu, which has been established under the county system in the Qin Dynasty for more than 2300 years, is a "famous historical and cultural city" in Shaanxi Province. It is the life and burial place of Li Gu, a famous diplomat, explorer and pioneer of the Silk Road in the Western Han Dynasty, who is known as quot;, the mouthpiece of quot; Beidou. There are 437 scenic spots, cultural landscapes and cultural sites in the territory, including Tibetan.
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