• Baltimore
  • Baiyin 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.

Baiyin District belongs to Baiyin City, Gansu Province. Baiyin gets its name because of the mine and because of the enterprise area. Located in central Gansu, western Baiyin City, the middle upper reaches of the Yellow River, located in the northwest edge of the Longxi Loess Plateau, the general trend of topography is high in the northwest and low in the southeast, with an average elevation of 1946.5 meters. It borders Gaolan County, Lanzhou City in the west, the Yellow River in the south, Qingcheng Town in Yuzhong County and Pingbao Township in Jingyuan County, Liuchuan Township in Jingyuan County in the east, and Zhongquan Township in Jingtai County in the north. With a total area of 1372 square kilometers, it has jurisdiction over 5 streets, 3 towns and 2 townships. In 2017, the registered population of Baiyin District was 290381. In 2017, Baiyin District achieved a GDP of 19.957 billion yuan, an increase of 2.6 percent over the same period last year. In July 2019, it was selected as the pilot county (district) of the national intellectual property strong county project.
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