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  • Ziyang District

Columbus (/kəˈlʌmbəs/) is the state capital and the most populous city in the U.S. state of Ohio. With a 2020 census population of 905,748, it is the 14th-most populous city in the U.S., the second-most populous city in the Midwest, after Chicago, and the third-most populous state capital. Columbus is the county seat of Franklin County; it also extends into Delaware and Fairfield counties. It is the core city of the Columbus metropolitan area, which encompasses 10 counties in central Ohio. The metropolitan area had a population of 2,138,926 in 2020, making it the largest entirely in Ohio[a] and 32nd-largest in the U.S.

Columbus originated as numerous Native American settlements on the banks of the Scioto River. Franklinton, now a city neighborhood, was the first European settlement, laid out in 1797. The city was founded in 1812 at the confluence of the Scioto and Olentangy rivers, and laid out to become the state capital. The city was named for Italian explorer Christopher Columbus. The city assumed the function of state capital in 1816 and county seat in 1824. Amid steady years of growth and industrialization, the city has experienced numerous floods and recessions. Beginning in the 1950s, Columbus began to experience significant growth; it became the largest city in Ohio in land and population by the early 1990s. The 1990s and 2000s saw redevelopment in numerous city neighborhoods, including Downtown.

Ziyang District, which belongs to Yiyang City, Hunan Province, is located in the north of the central city of Yiyang City, facing Changsha-Zhuzhou-Xiangtan Urban agglomeration to the east and Changde Hanshou County to the west, with a population of 423000 and an area of 680sq km. It has jurisdiction over five towns, one township, two subdistrict offices and one provincial industrial park (Changchun Economic Development District). Ziyang is an important transportation hub and material distribution center in central and northern Hunan, and it is the "key place to undertake the gradient transfer of processing trade" approved by the Ministry of Commerce. The region has formed four major industrial clusters dominated by equipment manufacturing, electronic information, light industrial textiles and agricultural products (food) processing, communications, electric power and other infrastructure have developed rapidly, and land and water transportation has formed a dense network. Ziyang District is a national ecological construction demonstration area, the national Dongting Lake Wetland Ecological Reserve, and it is also one of the two provincial counties with excellent environmental quality in Hunan Province. Guan Yunchang
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