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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.

Jingdong Yi Autonomous County belongs to Pu'er City, Yunnan Province. It is located in the southwest of Yunnan Province and the northern end of Pu'er City. It is located between 101 °15'E longitude and 23 °56 mi 24 °29'N, bordering Nanhua County, Chuxiong City and Shuangbai County in the east, Zhenyuan County in the south, across the Lancang River in the west, and Nanjian County and Midu County in the north. It covers an area of 4532 square kilometers. Jinping Town, where the county seat is located, is 477km away from Kunming, the provincial capital. 279 kilometers away from Pu'er City. At the end of 2016, Jingdong Yi Autonomous County had a total registered population of 367400, with 10 towns and 3 townships under its jurisdiction. Jingdong Yi Autonomous County is located at the southern end of the Hengduanshan vein. The main mountains belong to the infinite mountain system and Ailao mountain system in the north-south direction of Yunling. The terrain is narrow in the north and wide in the south, belonging to the subtropical season.
Travel Guides In Jingdong Yi Autonomous County
Travel Notes In Jingdong Yi Autonomous County
food and drink
This is Pu'er Jingdong, a small southwestern town where "tea comes out of silver". The tea culture here is "long-lasting" but also "new and enduring".
Unlimited travel
This May, the lingering rain fell again and again, only stealing a day and a half of sunshine in the gap between God and God. There is plenty of rain
eat and drink endlessly
Wuliang Mountain is a national nature reserve in the west of Jingdong County. It stretches for hundreds of miles and has rich vegetation. The small ye
At the end of November and the beginning of December, I want to go to Yunnan once, and catch up with the three major seasonal landscapes in one trip
late November early December I want to go to Yunnan once Look at Three Seasonal Landscapes Tengchong Ginkgo Yellow Leaf Season Wuliang Mountain Winter
Travel Asks In Jingdong Yi Autonomous County
Travel Asks In Jingdong Yi Autonomous County