• Tucson
  • Zhangpu County

Tucson (/ˈtuːsɒn, tuːˈsɒn/; Spanish: Tucson, O'odham: Cuk-Ṣon) is a city in and the county seat of Pima County, Arizona, United States, and is home to the University of Arizona. It is the second largest city in Arizona behind Phoenix, with a population of 542,629 in the 2020 United States census, while the population of the entire Tucson metropolitan statistical area (MSA) is 1,043,433. The Tucson MSA forms part of the larger Tucson-Nogales combined statistical area (CSA). Both Tucson and Phoenix anchor the Arizona Sun Corridor. The city is 108 miles (174 km) southeast of Phoenix and 60 mi (97 km) north of the U.S.–Mexico border. Tucson is the 34th largest city and the 53rd largest metropolitan area in the United States (2014).

Major incorporated suburbs of Tucson include Oro Valley and Marana northwest of the city, Sahuarita south of the city, and South Tucson in an enclave south of downtown. Communities in the vicinity of Tucson (some within or overlapping the city limits) include Casas Adobes, Catalina Foothills, Flowing Wells, Midvale Park, Tanque Verde, Tortolita, and Vail. Towns outside the Tucson metro area include Benson to the southeast, Catalina and Oracle to the north, and Green Valley to the south.

Tucson was founded as a military fort by the Spanish when Hugo O'Conor authorized the construction of Presidio San Agustín del Tucsón in 1775. It was included in the state of Sonora after Mexico gained independence from the Spanish Empire in 1821. In 1853, the United States acquired a 29,670 square miles (76,840 km2) region of present-day southern Arizona and southwestern New Mexico from Mexico under the Gadsden Purchase. Tucson served as the capital of the Arizona Territory from 1867 to 1877. Tucson was Arizona's largest city by population during the territorial period and early statehood, until it was surpassed by Phoenix by 1920. Nevertheless, population growth remained strong during the late 20th century. In 2017, Tucson was the first American city to be designated a "City of Gastronomy" by UNESCO.

Zhangpu County (ancient Zhangzhou capital Zhangpu County) is a coastal county in the south of Zhangzhou City, Fujian Province. It was founded in the second year of Tang Chuangong (686) and is known as "Jin Zhangpu" after the Ming Dynasty. It is located between 23 °43mm / m 24 °21m in north latitude and 118o / 02m in longitude 117 °24m in east, with Xiamen in the east and Shantou in the south, separated by a strip of water from Taiwan. The relationship with Taiwan has a long history, and it is a famous hometown of overseas Chinese and the ancestral home of Taiwan compatriots. 12000 people in the county have gone to Taiwan, 26000 people belong to Taiwan, and Zhangpu nationality accounts for more than 2 million of the more than 23 million Taiwanese. There are Nanxi, Luxi, Fotan Creek, Chihu Creek, Duxun Creek, Hanjiang River and other rivers, with an annual precipitation of 1600 mm and an average annual temperature of 21.8℃. There are 216 km coastline, 178 islands and reefs, 6 bays and 5 bays.
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