States

South Dakota (/dəˈkoʊtə/ ⓘ; Siouan languages: Dakȟóta itókaga, pronounced [daˈkˣota iˈtokaga]) is a landlocked state in the Upper Midwest, North Central region of the United States. It is also part of the Great Plains. South Dakota is named after the Dakota Sioux tribe, which comprises a large portion of the population and has historically dominated the territory. South Dakota is the 17th-largest by area, the fifth-least populous, and the fifth-least densely populated of the 50 United States. Pierre is the state capital, and Sioux Falls, with a population of about 213,900, is the most populous city. The Missouri River bisects the state into two geographically and socially distinct halves colloquially known as "East River" and "West River". South Dakota is bordered by North Dakota to the north, Minnesota to the east, Iowa to the southeast, Nebraska to the south, Wyoming to the west, and Montana to the northwest.

South Carolina (/ˌkærəˈlaɪnə/ ⓘ KARR-ə-LY-nə) is a state in the Southeastern, South Atlantic and Deep South regions of the United States. It borders North Carolina to the north and northeast, the Atlantic Ocean to the southeast, and Georgia to the west and south across the Savannah River. Along with North Carolina, it makes up the Carolinas region of the East Coast. South Carolina is the 11th-smallest and 23rd-most populous U.S. state with a recorded population of 5,118,425 according to the 2020 census. In 2019, its GDP was $213.45 billion. South Carolina is composed of 46 counties. The capital is Columbia with a population of 136,632 in 2020; while its most populous city is Charleston with a 2020 population of 150,227. The Greenville-Spartanburg-Anderson, SC Combined Statistical Area is the most populous combined metropolitan area in the state, with an estimated 2023 population of 1,590,636.

South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. With a total land area of 984,314 square kilometres (380,046 sq mi), it is the fourth-largest of Australia's states and territories by area, which includes some of the most arid parts of the continent. With 1.9 million people as of June 2025, it is the 17th-largest subdivision in the world and the fifth-largest in Australasia. It is the second-most highly centralised state in the nation after Western Australia, with more than 67% of South Australians living in the capital Adelaide or its environs. Other population centres in the state are relatively small; with Mount Gambier being the second-largest centre, with a population of 26,878