Afghanistan, officially the Islamic Republic of Afghanistan, is a landlocked country in South Asia. Afghanistan is bordered by Pakistan to the east and south; Iran to the west; Turkmenistan, Uzbekistan, and Tajikistan to the north; and China to the northeast. Occupying 652,000 square kilometers (252,000 sq mi), it is a mountainous country with plains in the north and southwest. Kabul is the capital and largest city. The population is around 32 million, mostly composed of ethnic Pashtuns, Tajiks, Hazaras and Uzbeks. Human habitation in Afghanistan dates back to the Middle Paleolithic Era, and the country's strategic location along the Silk Road connected it to the cultures of the Middle East and other parts of Asia. Afghanistan is a unitary presidential Islamic republic. The country has high levels of terrorism, poverty, child malnutrition, and corruption.

Albania, officially the Republic of Albania, is a country in Southeast Europe on the Adriatic and Ionian Sea within the Mediterranean Sea. It shares land borders with Montenegro to the northwest, Kosovo to the northeast, North Macedonia to the east, Greece to the south and maritime borders with Greece, Montenegro and Italy to the west. Historically, the country has been inhabited by numerous civilisations such as the Illyrians, Thracians, Ancient Greeks, Romans, Byzantines, Venetians and Ottomans. Politically, the country is a unitary parliamentary constitutional republic and developing country with an upper-middle income economy dominated by the service sector, followed by manufacturing.

Algeria, officially the People's Democratic Republic of Algeria, is a country in the Maghreb region of North Africa. The capital and most populous city is Algiers, located in the far north of the country on the Mediterranean coast. With an area of 2,381,741 square kilometres (919,595 sq mi), Algeria is the tenth-largest country in the world, and the largest by area in the African Union and the Arab world. With an estimated population of over 43 million, it is the eighth-most populous country in Africa. Algeria is bordered to the northeast by Tunisia, to the east by Libya, to the southeast by Niger, to the southwest by Mali, Mauritania, and the Western Saharan territory, to the west by Morocco, and to the north by the Mediterranean Sea. It is a semi-presidential republic consisting of 48 provinces and 1,541 communes (counties). Pre-1962 Algeria has known many empires and dynasties, including ancient Numidians, Phoenicians, Carthaginians, Romans, Vandals, Byzantines, Umayyads, Abbasids, Idrisid, Aghlabid, Rustamid, Fatimids, Zirid, Hammadids, Almoravids, Almohads, Zayyanids, Spaniards, Ottomans and finally, the French colonial empire. Algeria is a regional and middle power. It has the highest human development index of all non-island African countries and one of the largest economies on the continent, based largely on energy exports.

Andorra, officially the Principality of Andorra, also called the Principality of the Valleys of Andorra, is a sovereign landlocked microstate on the Iberian Peninsula, in the eastern Pyrenees, bordered by France to the north and Spain to the south. Believed to have been created by Charlemagne, Andorra was ruled by the count of Urgell until 988, when it was transferred to the Roman Catholic Diocese of Urgell. The present principality was formed by a charter in 1278. It is known as a principality as it is a diarchy headed by two princes: the Bishop of Urgell in Catalonia, Spain, and the President of the French Republic. Andorra is the sixth-smallest nation in Europe, having an area of 468 square kilometres (181 sq mi) and a population of approximately 77,006. The Andorran people are a Romance ethnic group of originally Catalan descent.

Angola, officially the Republic of Angola, is a country on the west coast of Southern Africa. It is the seventh-largest country in Africa, bordered by Namibia to the south, the Democratic Republic of the Congo to the north, Zambia to the east, and the Atlantic Ocean to the west. Angola has an exclave province, the province of Cabinda that borders the Republic of the Congo and the Democratic Republic of the Congo. The capital and largest city of Angola is Luanda. The territory of Angola has been inhabited since the Paleolithic Era, hosting a wide variety of ethnic groups, tribes and kingdoms. The nation state of Angola originated from Portuguese colonisation, which initially began with coastal settlements and trading posts founded in the 16th century. After a protracted anti-colonial struggle, independence was achieved in 1975 as the Marxist–Leninist People's Republic of Angola, a one-party state supported by the Soviet Union and Cuba. The civil war between the ruling People's Movement for the Liberation of Angola (MPLA) and the insurgent anti-communist National Union for the Total Independence of Angola (UNITA), supported by the United States and apartheid South Africa, lasted until 2002. The sovereign state has since become a relatively stable unitary, presidential constitutional republic.

Antigua and Barbuda is an island sovereign state in the West Indies in the Americas, lying between the Caribbean Sea and the Atlantic Ocean. It consists of two major islands, Antigua and Barbuda (separated by 39 miles), and a number of smaller islands (including Great Bird, Green, Guiana, Long, Maiden, Prickly Pear, York Islands and further south, the island of Redonda). The permanent population numbers about 95,900 (2018 est.), with 97% being resident on Antigua. The capital and largest port and city is St. John's on Antigua, with Codrington being the largest town on Barbuda. Lying near each other, Antigua and Barbuda are in the middle of the Leeward Islands, part of the Lesser Antilles, roughly at 17°N of the equator. The island of Antigua was explored by Christopher Columbus in 1493 and named for the Church of Santa María La Antigua. Antigua was colonized by Britain in 1632; Barbuda island was first colonised in 1678.

Argentina, officially the Argentine Republic, is a country located mostly in the southern half of South America. Sharing the bulk of the Southern Cone with Chile to the west, the country is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. With a mainland area of 2,780,400 km2 (1,073,500 sq mi), Argentina is the eighth-largest country in the world, the fourth largest in the Americas, the second largest in South America after Brazil, and the largest Spanish-speaking nation. The sovereign state is subdivided into twenty-three provinces and one autonomous city, Buenos Aires, which is the federal capital of the nation as decided by Congress. The provinces and the capital have their own constitutions, but exist under a federal system. Argentina claims sovereignty over part of Antarctica, the Falkland Islands (Islas Malvinas), and South Georgia and the South Sandwich Islands. The Inca Empire expanded to the northwest of the country in Pre-Columbian times. The country has its roots in Spanish colonization of the region during the 16th century.

Armenia, officially the Republic of Armenia, is a landlocked country in the South Caucasus region of Eurasia. Located in Western Asia, on the Armenian Highlands, it is bordered by Turkey to the west, Georgia to the north, the de facto independent Republic of Artsakh and Azerbaijan to the east, and Iran and Azerbaijan's exclave of Nakhchivan to the south. Armenia is a unitary, multi-party, democratic nation-state with an ancient cultural heritage. Between the 16th and 19th centuries, the traditional Armenian homeland composed of Eastern Armenia and Western Armenia came under the rule of the Ottoman and Iranian empires, repeatedly ruled by either of the two over the centuries. By the 19th century, Eastern Armenia had been conquered by the Russian Empire, while most of the western parts of the traditional Armenian homeland remained under Ottoman rule. During World War I, Armenians living in their ancestral lands in the Ottoman Empire were systematically exterminated in the Armenian Genocide. The modern Republic of Armenia became independent in 1991 during the dissolution of the Soviet Union.

Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. It is the largest country in Oceania and the world's sixth-largest country by total area. The population of 26 million is highly urbanised and heavily concentrated on the eastern seaboard. Australia's capital is Canberra, and its largest city is Sydney. The country's other major metropolitan areas are Melbourne, Brisbane, Perth, and Adelaide. Indigenous Australians inhabited the continent for about 65,000 years[14] prior to the first arrival of Dutch explorers in the early 17th century, who named it New Holland. In 1770, Australia's eastern half was claimed by Great Britain and initially settled through penal transportation to the colony of New South Wales from 26 January 1788, a date which became Australia's national day. Australia has since [1901] maintained a stable liberal democratic political system that functions as a federal parliamentary constitutional monarchy, comprising six states and ten territories. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It has a landmass of 7,617,930 square kilometres (2,941,300 sq mi).

Austria, officially the Republic of Austria, is a landlocked East Alpine country in the southern part of Central Europe. It is composed of nine federated states, one of which is Vienna, Austria's capital and its largest city. It is bordered by Germany to the northwest, Czech Republic to the north, Slovakia to the northeast, Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the west. Austria occupies an area of 83,879 km2 (32,386 sq mi) and has a population of nearly 9 million people. While German is the country's official language, many Austrians communicate informally in a variety of Bavarian dialects. Austria is a parliamentary representative democracy with a directly elected Federal President as head of state and a Chancellor as head of the federal government. Major urban areas of Austria include Graz, Linz, Salzburg and Innsbruck.

Azerbaijan, officially the Republic of Azerbaijan, is a country in the South Caucasus region of Eurasia at the crossroads of Eastern Europe and Western Asia. It is bounded by the Caspian Sea to the east, Russia to the north, Georgia to the northwest, Armenia to the west and Iran to the south. The exclave of Nakhchivan is bounded by Armenia to the north and east, Iran to the south and west, and has an 11 km (6.8 mi) long border with Turkey in the northwest. The Azerbaijan Democratic Republic proclaimed its independence in 1918 and became the first secular democratic Muslim-majority state. The modern Republic of Azerbaijan proclaimed its independence on 30 August 1991, shortly before the dissolution of the USSR in the same year. Azerbaijan is a unitary semi-presidential republic.

The Bahamas, known officially as the Commonwealth of The Bahamas, is a country within the Lucayan Archipelago in the West Indies. It is a member of the Commonwealth Realms under the monarchy of Queen Elizabeth II. The archipelagic state consists of fewer than 700 islands, cays, and islets in the Atlantic Ocean, and is located north of Cuba and Hispaniola Island (Haiti and the Dominican Republic), northwest of the Turks and Caicos Islands, southeast of the US state of Florida, and east of the Florida Keys. The capital is Nassau on the island of New Providence. The Bahamas were inhabited by the Lucayans, a branch of the Arawakan-speaking Taíno people, for many centuries. African slaves and their descendants constituted the majority of the population from [the late 18th century] on. The Bahamas gained governmental independence in 1973 led by Sir Lynden O. Pindling.