• Baltimore
  • Diebu Country

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.

Diebu County, under the jurisdiction of Gannan Tibetan Autonomous Prefecture, Gansu Province, is located in the alpine canyon between Xiyanmin and Dieshan mountain systems in the Qinling Mountains, at the junction of Ganchuan on the eastern edge of the Qinghai-Tibet Plateau, Zhuoni in the north, Zhouqu in the east, Hadapu in Dangchang in the northeast, and Ruoergai County and Jiuzhaigou County in Sichuan in the southwest. It has a total area of 5108.3 square kilometers and has jurisdiction over 5 towns and 6 townships. In 2017, there were 54000 permanent residents, including Tibetan, Hui, Mongolian and other ethnic minorities. Diebu County was called "Diezhou" in ancient times, which means "thumb" in Tibetan and was called the place where the mountain gods "pressed" it. There are revolutionary sites such as the "Russian Boundary Conference" of the Red Army during the long March, the former residence of Chairman Mao in Zirina, and the Natural Insurance Battle of Lazikou. In addition, there are also Majiayao cultural sites and Tibetan Buddhist monasteries. September 25, 2018
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