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Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., and the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Since 1854, the city has been coextensive with Philadelphia County, the most populous county in Pennsylvania and urban core of the Delaware Valley, the nation's seventh-largest and one of world's largest metropolitan regions with 6.245 million residents in 2020. The city's population at the 2020 census was 1,603,797, and over 56 million people live within 250 mi (400 km) of Philadelphia.

Philadelphia was founded in 1682 by William Penn, an English Quaker. The city served as capital of the Pennsylvania Colony during the British colonial era and went on to play a historic and vital role as the central meeting place for the nation's founding fathers whose plans and actions in Philadelphia ultimately inspired the American Revolution and the nation's independence. Philadelphia hosted the First Continental Congress in 1774 following the Boston Tea Party, preserved the Liberty Bell, and hosted the Second Continental Congress during which the founders signed the Declaration of Independence, which historian Joseph Ellis has described as "the most potent and consequential words in American history". Once the Revolutionary War commenced, both the Battle of Germantown and the Siege of Fort Mifflin were fought within Philadelphia's city limits. The U.S. Constitution was later ratified in Philadelphia at the Philadelphia Convention of 1787. Philadelphia remained the nation's largest city until 1790, when it was surpassed by New York City, and served as the nation's first capital from May 10, 1775, until December 12, 1776, and on four subsequent occasions during and following the American Revolution, including from 1790 to 1800 while the new national capital of Washington, D.C., was under construction.

With 18 four-year universities and colleges, Philadelphia is one of the nation's leading centers for higher education and academic research. As of 2021[update], the Philadelphia metropolitan area was the state's largest and nation's ninth-largest metropolitan economy with a gross metropolitan product (GMP) of US$479 billion. The city is home to five Fortune 500 corporate headquarters as of 2022. The Philadelphia skyline, which includes several globally renowned commercial skyscrapers, is expanding, primarily with new residential high-rise condominiums. Philadelphia and the Delaware Valley are a biotechnology and venture capital hub; and the Philadelphia Stock Exchange, owned by NASDAQ, is the nation's oldest stock exchange and a global leader in options trading. 30th Street Station, the city's primary rail station, is the third-busiest Amtrak hub in the nation, and the city's multimodal transport and logistics infrastructure, including Philadelphia International Airport, the PhilaPort seaport, freight rail infrastructure, roadway traffic capacity, and warehouse storage space, are all expanding.

Longlin Autonomous County belongs to Baise City, Guangxi Zhuang Autonomous region, located in the northwest of Baise City, at the junction of Yunnan, Guizhou and Guangxi provinces (regions), connected with Tianlin County in the east, Xilin County in the south and Xingyi City in Guizhou Province in the north. Longlin Autonomous County covers a total area of 3551 square kilometers and has jurisdiction over 6 towns and 10 townships at the end of 2015. In 2015, the county completed a gross domestic product of 4.575 billion yuan. By the end of 2012, Longlin Autonomous County has a total population of 389355. Longlin Autonomous County of all nationalities is located at the southeast edge of the Yunnan-Guizhou Plateau, with high elevation, mainly Zhongshan, no plain, the south is higher than the north, tilting from west to east; it is a subtropical monsoon climate zone with no extreme heat in summer and no severe cold in winter. Longlin Autonomous County is the only one in China.
Airport In Multinational Autonomous County of Longlin - Baise Bama Airport
Baise Bama Airport (Baise Bama Airport, IATA: AEB, ICAO: ZGBS), located 5.5 kilometers southeast of Tianyang District, Baise City, Guangxi Zhuang Autonomous Region, China, 79 kilometers away from the county seat of Bama Yao Autonomous County, Hechi City, is a 4C-level military and civilian shared feeder airport   .
In 1965, the Air Force Tianyang Airport was completed and suspended; on June 25, 2003, it was approved by the State Council and the Central Military Commission to implement military and civilian use, and the civilian part was named Baise Tianyang Airport, which was officially opened to navigation on February 4, 2007; September 8, 2013 , Baise Tianyang Airport changed its name to Baise Bama Airport   .
As of February 2020, the terminal area of ​​Baise Bama Airport is 1,350 square meters, the civil aviation station area is 10,000 square meters, and there are 2 C-class seats; the runway is 2,500 meters long and 45 meters wide, which can meet the requirements of B737-800, A321 Aircraft of the same type and below can take off and land at night, and can meet the demand of annual passenger throughput of 80,000 passengers   .
In 2019, Baise Bama Airport completed a total of 225,185 passenger throughput, a year-on-year increase of 24.5%, ranking 186th in the country; cargo and mail throughput was 34.5 tons, a year-on-year increase of 15.4%, ranking 203rd in the country; aircraft took off and landed 2,908 times, Year-on-year growth of 18.9%, ranking 193rd in the country   .
Travel Guides In Multinational Autonomous County of Longlin
Travel Sights In Multinational Autonomous County of Longlin
Travel Notes In Multinational Autonomous County of Longlin
Travel Asks In Multinational Autonomous County of Longlin
Travel Asks In Multinational Autonomous County of Longlin