• Baltimore
  • Yiyuan County

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.

Yiyuan County, which belongs to Zibo City, Shandong Province, is located in the middle of Shandong Province, Linqu County of Weifang City to the east, Yishui County to the southeast, Laiwu District and Gangcheng District of Jinan City to the west, Xintai City of Taian City to the southwest, Mengyin County of Linyi City to the south, and Boshan District and Zichuan District to the north. In 1944, it established a county with a total area of 1636 square kilometers, with 10 towns, 2 streets, 1 provincial economic development zone and 643 villages (communities) under its jurisdiction by 2017. As of December 31, 2017, the total population of Yiyuan County is 569900. Yiyuan is the roof of Shandong Province, China, with an average elevation of 401 meters, which is the highest in Shandong Province. There are 1983 famous hills in the territory, and the highest elevation of Mount Lushan is 1108 meters, which is the fourth peak in Shandong Province. There are 1530 large and small rivers.
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