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Indianapolis (/ˌɪndiəˈnæpəlɪs/), colloquially known as Indy, is the state capital and most populous city of the U.S. state of Indiana and the seat of Marion County. According to the U.S. Census Bureau, the consolidated population of Indianapolis and Marion County was 977,203 in 2020. The "balance" population, which excludes semi-autonomous municipalities in Marion County, was 887,642. It is the 15th most populous city in the U.S., the third-most populous city in the Midwest, after Chicago and Columbus, Ohio, and the fourth-most populous state capital after Phoenix, Arizona, Austin, Texas, and Columbus. The Indianapolis metropolitan area is the 33rd most populous metropolitan statistical area in the U.S., with 2,111,040 residents. Its combined statistical area ranks 28th, with a population of 2,431,361. Indianapolis covers 368 square miles (950 km2), making it the 18th largest city by land area in the U.S.

Indigenous peoples inhabited the area dating to as early as 10,000 BC. In 1818, the Lenape relinquished their tribal lands in the Treaty of St. Mary's. In 1821, Indianapolis was founded as a planned city for the new seat of Indiana's state government. The city was platted by Alexander Ralston and Elias Pym Fordham on a 1-square-mile (2.6 km2) grid next to the White River. Completion of the National and Michigan roads and arrival of rail later solidified the city's position as a manufacturing and transportation hub. Two of the city's nicknames reflect its historical ties to transportation—the "Crossroads of America" and "Railroad City". Since the 1970 city-county consolidation, known as Unigov, local government administration operates under the direction of an elected 25-member city-county council headed by the mayor.

Indianapolis anchors the 29th largest economic region in the U.S., based primarily on the industries of trade, transportation, and utilities; professional and business services; education and health services; government; leisure and hospitality; and manufacturing. The city has notable niche markets in amateur sports and auto racing. The city is home to three Fortune 500 companies, two major league sports clubs (Colts and Pacers), five university campuses, and several museums, including the world's largest children's museum. However, the city is perhaps best known for annually hosting the world's largest single-day sporting event, the Indianapolis 500. Among the city's historic sites and districts, Indianapolis is home to the largest collection of monuments dedicated to veterans and war casualties in the U.S. outside of Washington, D.C.

Tongan District (ancient Tongan County, Quanzhou Prefecture) is one of the six districts of Xiamen, also known as "Silver City". It was bought in the third year of Taikang in the Western Jin Dynasty (AD 282) and soon abandoned. Tang Zhenyuan nineteen years (803) analysis of Nanan County Datong Field, Tang Changxing four years after the five dynasties (933). Tianfu four years after the Jin Dynasty (939), the same field as Tongan County, is the capital of Quanzhou. In 1958, Tongan County was divided into Xiamen City, Tongan County was divided into Jinjiang area in June 1970, and Xiamen City in June 1973. The implementation of county governance, because the county seat is in the shape of a waist silver ingot, it is called "Silver City". In history, it had jurisdiction over Jinmen, Xiamen, Jimei District and a small part of the eastern part of Zhangzhou Taiwan Investment Zone. After liberation, the administrative area was changed several times and was assigned to it in 1973.
Airport In Tong'an District - Xiamen Gaoqi International Airport
Xiamen Gaoqi International Airport (Xiamen Gaoqi International Airport, IATA: XMN, ICAO: ZSAM), located in Huli District, Xiamen City, Fujian Province, China, is a 4E-class civil international airport and an important regional aviation hub on the southeast coast of China. One of the two major trunk airports.  
Xiamen Gaoqi International Airport was opened to traffic in 1983. In November 1996, Terminal 3 of the airport was put into use. In December 2014, Terminal 4 was officially opened, and the annual passenger handling capacity of the airport rose to 27 million.   
According to information on the airport's official website in September 2017, Xiamen Gaoqi International Airport has a 3,400-meter-long runway, 2 parallel taxiways and 10 contact roads; the total area of ​​the apron is 770,000 square meters, with 89 parking spaces; the terminal building The total construction area is 237,800 square meters; a total of 109 cities and 182 domestic and overseas routes have been opened.  
In 2016, Xiamen Gaoqi International Airport completed a passenger throughput of 22.7376 million passengers, a year-on-year increase of 4.2%; cargo and mail throughput of 328,400 tons, a year-on-year increase of 5.7%; take-off and landing sorties of 183,500 vehicles, a year-on-year increase of 1.9%, ranking first in China respectively. 11, 12, 13.  
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