• Tulsa
  • Yancheng Area

Tulsa (/ˈtʌlsə/) is the second-largest city in the state of Oklahoma and 47th-most populous city in the United States. The population was 413,066 as of the 2020 census. It is the principal municipality of the Tulsa Metropolitan Area, a region with 1,023,988 residents. The city serves as the county seat of Tulsa County, the most densely populated county in Oklahoma, with urban development extending into Osage, Rogers, and Wagoner counties.

Tulsa was settled between 1828 and 1836 by the Lochapoka Band of Creek Native American tribe and most of Tulsa is still part of the territory of the Muscogee (Creek) Nation.[a]

Historically, a robust energy sector fueled Tulsa's economy; however, today the city has diversified and leading sectors include finance, aviation, telecommunications and technology. Two institutions of higher education within the city have sports teams at the NCAA Division I level: Oral Roberts University and the University of Tulsa. As well, the University of Oklahoma has a secondary campus at the Tulsa Schusterman Center, and Oklahoma State University has a secondary campus located in downtown Tulsa. For most of the 20th century, the city held the nickname "Oil Capital of the World" and played a major role as one of the most important hubs for the American oil industry.

Yicheng District belongs to Luohe City, Henan Province. The central and southern part of Henan Province belongs to the plain area of the middle reaches of the Dasha River in the Huaihe River Basin. It is located at longitude 113o 45'10 east, longitude 114 °6'39, latitude 33 °34'37, latitude 33 °44'59, latitude 33 °34'39, respectively. It is bordered by Zhaoling District to the east, Zhaoling District and Yuanhui District to the southeast, Shahe River to the south, Wuyang County to the southwest, Linying County to the northwest and Linying County to the north, and Zhaoling District, Linying County, Zhoukou City and Xihua County to the northeast. The region has a total area of 413.1 square kilometers, with a total population of 528000 in 2012, and has jurisdiction over 8 townships and Shabei streets. Politics, Finance and economy of Luohe City
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