• Tulsa
  • Mangshi

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.

Mangshi, known as "Chuan Huan" in Dai language, is the capital of Dehong Dai Jingpo Autonomous Prefecture, Yunnan Province, people's Republic of China. It is located between 98 °05 Longitude 98 °44km east longitude and 24 °05km north latitude, about 71 km from east to west and 62 km from north to south, with a total area of 2987 square kilometers. Longling County is bordered by Longling County in the east and northeast, Ruili City in the southwest, Lianghe County and Longchuan County in the west and northwest across the Longchuan River, and the Republic of the Union of Myanmar in the south. It is the transportation hub leading to Ruili, Longchuan, Yingjiang and Lianghe, and it is also an important gateway for China to South and Southeast Asia. In ancient times, Mangshi was the territory of the Dai nationality, which is inhabited by the Dai, Han, Jingpo, Deang, Achang, Lisu and other ethnic groups, with a total population of 3949.
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