• Baltimore
  • Tongguan District

Baltimore (/ˈbɔːltɪmɔːr/ BAWL-tim-or, locally: /bɔːldəˈmɔːr/ bawl-da-MOR or /ˈbɔːlmər/ BAWL-mər) is the most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic, and the 30th most populous city in the United States with a population of 585,708 in 2020. Baltimore was designated an independent city by the Constitution of Maryland[a] in 1851, and today is the most populous independent city in the United States. As of 2021, the population of the Baltimore metropolitan area was estimated to be 2,838,327, making it the 20th largest metropolitan area in the country. Baltimore is located about 40 miles (64 km) north northeast of Washington, D.C., making it a principal city in the Washington–Baltimore combined statistical area (CSA), the third-largest CSA in the nation, with a 2021 estimated population of 9,946,526.

Prior to European colonization, the Baltimore region was used as hunting grounds by the Susquehannock Native Americans, who were primarily settled further northwest than where the city was later built. Colonists from the Province of Maryland established the Port of Baltimore in 1706 to support the tobacco trade with Europe, and established the Town of Baltimore in 1729. The first printing press and newspapers were introduced to Baltimore by Nicholas Hasselbach and William Goddard respectively, in the mid-18th century.

The Battle of Baltimore was a pivotal engagement during the War of 1812, culminating in the failed British bombardment of Fort McHenry, during which Francis Scott Key wrote a poem that would become "The Star-Spangled Banner", which was eventually designated as the American national anthem in 1931. During the Pratt Street Riot of 1861, the city was the site of some of the earliest violence associated with the American Civil War.

Tongguan District, which belongs to Tongling City, Anhui Province, is located in the southwest of Tongling City, named after Tongguanshan. East and southeast even the suburbs, west and Congyang County across the river, north Tongling County. The total area is 135 square kilometers. Tongguan District is the north gate of "two mountains and one lake", scenic spots-- Huangshan, Jiuhua Mountain and Taiping Lake, which gathers scientific and educational resources such as Tongling College, Tongling Vocational and Technical College, and Party School of the Municipal CPC Committee. It is the forward position and important carrier for Tongling to implement the strategy of "expanding from north to east". The cultural and natural landscapes include Tianjing Lake, Tongguanshan and Wumushan, which are national 4A tourist scenic spots. In 2018, Tongguan District has jurisdiction over 2 streets and 2 towns, and has another development zone with a resident population of 407000, achieving a GDP of 45.39469 billion yuan.
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