Louisville (/ˈluːivɪl/ (listen) LOO-ee-vil, US: /ˈluːɪvɪl/ (listen) LOO-ə-vəl, locally /ˈlʊvɪl/ (listen) LUUV-əl) is the largest city in the Commonwealth of Kentucky and the 28th most-populous city in the United States.[a] Louisville is the historical seat and, since 2003, the nominal seat of Jefferson County, on the Indiana border.
Named after King Louis XVI of France, Louisville was founded in 1778 by George Rogers Clark, making it one of the oldest cities west of the Appalachians. With nearby Falls of the Ohio as the only major obstruction to river traffic between the upper Ohio River and the Gulf of Mexico, the settlement first grew as a portage site. It was the founding city of the Louisville and Nashville Railroad, which grew into a 6,000-mile (9,700 km) system across 13 states.
Today, the city is known as the home of boxer Muhammad Ali, the Kentucky Derby, Kentucky Fried Chicken, the University of Louisville and its Cardinals, Louisville Slugger baseball bats, and three of Kentucky's six Fortune 500 companies: Humana, Kindred Healthcare, and Yum! Brands. Muhammad Ali International Airport, Louisville's main commercial airport, hosts UPS's worldwide hub.
Pingliang, prefecture-level city of Gansu province. Located in the east of Gansu Province, the eastern foot of Liupan Mountain and the upper reaches of Jinghe River, it is the geometric center of Shaanxi-Gansu-Ningxia "Golden Triangle", across Longshan (Guanshan), east of Xianyang, Shaanxi, west of Dingxi and Baiyin of Gansu, south of Baoji of Shaanxi and Tianshui of Gansu, and adjacent to Guyuan of Ningxia and Qingyang of Gansu to the north. Pingliang is an important animal husbandry base and fur distribution center in northwest China, and the main agricultural and forestry product production base and animal husbandry in Gansu Province. Pingliang, known as "Longshang dry Wharf", is an important city that must pass through the ancient "Silk Road". It is historically known as "the first city of Chang'an in the west". Since ancient times, Pingliang has been an important town for the barrier of the three Qin dynasties and the control of Wuyuan. It is a "must-contend place for soldiers" and a traditional commodity distribution center in Longdong. The traffic and military focal point of the Central Plains leading to the western region and the eastern end of the ancient Silk Road, not only in the northwest region.