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  • Shandan County

Washington, D.C., formally the District of Columbia, also known as Washington or D.C. or locally simply as the District, is the capital city and federal district of the United States. It is located on the east bank of the Potomac River, which forms its southwestern and southern border with the U.S. state of Virginia, and it shares a land border with the U.S. state of Maryland on its other sides. The city was named for George Washington, a Founding Father and the first president of the United States, and the federal district is named after Columbia, the female personification of the nation. As the seat of the U.S. federal government and several international organizations, the city is an important world political capital. It is one of the most visited cities in the U.S., with over 20 million annual visitors as of 2016.

The U.S. Constitution provides for a federal district under the exclusive jurisdiction of Congress; the district is not a part of any U.S. state (nor is it one itself). The signing of the Residence Act on July 16, 1790, approved the creation of the capital district located along the Potomac River near the country's East Coast. The City of Washington was founded in 1791, and Congress held its first session there in 1800. In 1801, the territory, formerly part of Maryland and Virginia (including the settlements of Georgetown and Alexandria), officially became recognized as the federal district. In 1846, Congress returned the land originally ceded by Virginia, including the city of Alexandria; in 1871, it created a single municipal government for the remaining portion of the district. There have been efforts to make the city into a state since the 1880s, a movement that has gained momentum in recent years, and a statehood bill passed the House of Representatives in 2021.

Shandan County, which belongs to Zhangye City, Gansu Province, is located in the middle of Hexi Corridor. It is the east gate of Jinzhangye, an important town on Silk Road. It is adjacent to Yongchang to the east, Qinghai to the south and Alashan right Banner in Inner Mongolia to the north. It is 148km long from north to south and 89km wide from east to west, with a total area of 5402 square kilometers. Shandan County is 15505,4441 meters above sea level, surrounded by mountains on three sides, high in the southeast and low in the northwest, with a continental cold and semi-arid climate. The economy of Shandan County is mainly agriculture and animal husbandry, with 857000 mu of arable land and 460000 mu of perennial cultivated area. It is a semi-agricultural and semi-pastoral county. The county is rich in tourism resources, there are national 4A scenic spots, "Expo Holy Land" Yanzhi Mountain Forest Park. It has the largest military racecourse in Asia, Shandan Army Racecourse, which has become the location shooting venue for many films. Famous Buddhist temples
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