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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.

Changbai Korean Autonomous County belongs to Baishan City, Jilin Province, located in the southeast of Jilin Province, the southern foot of Changbai Mountain, the right bank of the upper reaches of the Yalu River. It starts from 2 km east of Qidaogou estuary in the west, 2 km northeast of 23 Daogou estuary in the east, 92 km between east and west poles, 68 km between north and south poles from Nanjiantou Village and No. 3 demarcation point between China and North Korea, and borders Linjiang City by Yalu River and Qidaogou River in the west and northwest. The north border with Linjiang City and Fusong County, from the northeastbound of the Qidaogou River along the ridge of the Changbai Mountains to the No. 3 border pillar between China and North Korea, adjacent to Fusong County; from the southeast from the south side of the No. 3 boundary pile between China and North Korea, turn westbound along the Yalu River to Changbai Town to the right bank of the Qidaogou Estuary and the city of Linjiang; one city and five cities across the Yalu River and the Democratic people's Republic of Korea
Airport In Korean Autonomous County of Changbai - Baishan Changbaishan Airport
Baishan Changbaishan Airport (Baishan Changbaishan Airport, IATA: NBS, ICAO: ZYBS), referred to as "Changbaishan Airport", is located in Chixi District, Changbai Mountain Protection and Development Zone, Songjianghe Town, Fusong County, Baishan City, Jilin Province, China, 15.5 kilometers away from the county seat of Fusong County in the northwest It is 37 kilometers away from Changbai Mountain Tianchi in the east and 99 kilometers away from the center of Baishan City in the west. It is a 4D-level forest tourism feeder airport   .
On July 10, 2006, the construction of Baishan Changbaishan Airport started; on August 3, 2008, Baishan Changbaishan Airport was completed and open to navigation; in April 2018, the second phase of the reconstruction and expansion project of Baishan Changbaishan Airport started   .
As of April 2020, the terminal building of Baishan Changbaishan Airport covers an area of ​​9,256 square meters, with 2 boarding corridors; Class B seats; the runway is 2600 meters long and 45 meters wide   .
In 2021, Baishan Changbaishan Airport will handle a total of 272,168 passengers, a year-on-year increase of 24.8%, ranking 167th in the country; cargo and mail throughput is 56.8 tons, a year-on-year increase of 489.7%, ranking 191st in the country; Increased by 57.3%, ranking 185th in the country   .
Travel Guides In Korean Autonomous County of Changbai
Travel Sights In Korean Autonomous County of Changbai
Travel Notes In Korean Autonomous County of Changbai
Travel Asks In Korean Autonomous County of Changbai
Travel Asks In Korean Autonomous County of Changbai