• Portland
  • Wudu District

Portland (/ˈpɔːrtlənd/, PORT-lənd) is a port city in the Pacific Northwest and the largest city in the U.S. state of Oregon. Situated at the confluence of the Willamette and Columbia rivers, Portland is the county seat of Multnomah County, the most populous county in Oregon. As of 2020, Portland had a population of 652,503, making it the 26th-most populated city in the United States, the sixth-most populous on the West Coast, and the second-most populous in the Pacific Northwest, after Seattle. Approximately 2.5 million people live in the Portland metropolitan statistical area (MSA), making it the 25th most populous in the United States. About half of Oregon's population resides within the Portland metropolitan area.

Named after Portland, Maine, the Oregon settlement began to be populated in the 1840s, near the end of the Oregon Trail. Its water access provided convenient transportation of goods, and the timber industry was a major force in the city's early economy. At the turn of the 20th century, the city had a reputation as one of the most dangerous port cities in the world, a hub for organized crime and racketeering. After the city's economy experienced an industrial boom during World War II, its hard-edged reputation began to dissipate. Beginning in the 1960s, Portland became noted for its growing liberal and progressive political values, earning it a reputation as a bastion of counter-culture.

Wudu District, under the jurisdiction of Longnan City, Gansu Province, is located in the southeast of Gansu Province, the central part of Longnan City and the middle reaches of the Bailong River. Wudu began as a place name in the pre-Qin Dynasty, Wudu County in the Western Han Dynasty, Jiizhou in the Tang Dynasty, Wudu County in the Republic of China, and the county was withdrawn in 2004. Wudu District is the political, economic, cultural, transportation center and military center of Longnan, and one of the regional central cities in the southeast of Longnan. It has jurisdiction over 4 subdistrict offices, 26 towns, 8 townships, 2 ethnic townships, 50 communities and 649 villages, covering an area of 4683 square kilometers; the total population is 602829, the resident population is 568100, and the urbanization rate is 40.56% (2017). Wudu District is located in the junction of Qin and Ba Mountains, known as "Ba Shu throat, Qin long lock key". It is the friend of Gansu, Shaanxi and Sichuan provinces.
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