World Geography and Capitals

International dialing code 20 belongs to Egypt. Country codes are assigned by the International Telecommunication Union and are used to route international telephone calls to specific countries.

The capital of Cape Verde is Praia, located on the island of Santiago. Cape Verde is an island country off the coast of West Africa. Oslo is the capital of Norway, Ottawa is Canada's capital, and Madrid is Spain's capital, making Praia the correct choice.

The capital of Kiribati is Tarawa Atoll (specifically South Tarawa). Kiribati is a central Pacific island nation. The other options are capitals of different countries: Bishkek (Kyrgyzstan), Vaduz (Liechtenstein), and Chisinau (Moldova), making Tarawa Atoll the correct answer.

Tel Aviv is a major city in Israel, located on the country's Mediterranean coastline. It is Israel's economic and technological center. Tel Aviv is not in Lebanon, Palikir (which is in Micronesia), or Iraq.

Johannesburg is the largest city in South Africa and serves as the provincial capital of Gauteng. It's known as South Africa's economic hub and was one of the host cities for the 2010 FIFA World Cup. Zimbabwe, Kenya, and Germany are all different countries - the latter two aren't even in Southern Africa.

Ho Chi Minh City (formerly Saigon) is the largest city in Vietnam. It's located in the southern region of the country and is a major economic hub. China, Thailand, and Malaysia are all different Southeast Asian countries.

Leinster House in Dublin is the seat of the Oireachtas (Irish Parliament), where both the Dáil Éireann (lower house) and Seanad Éireann (senate) meet. The Riksdag building is in Sweden, Palace of Westminster is in London, and Palazzo Madama is in Rome - all parliament buildings but in different countries.

OPEC (Organization of the Petroleum Exporting Countries) has its headquarters in Vienna, Austria, since 1965. Abu Dhabi and Dubai are in the UAE, which is a member country, but not the headquarters city.

The FIA (Federation Internationale de l'Automobile) is headquartered in Paris, France. It was founded in 1904 and oversees international motorsport. While it has had offices in various locations, Paris has been its traditional and primary headquarters. London hosts many automotive organizations, but the FIA is based in France.

Rabat is the capital city of Morocco, located on the Atlantic coast. It has been Morocco's political capital since 1955 and houses the royal palace, parliament, and government offices. The other options are fictitious names with similar endings, designed to confuse test-takers unfamiliar with the correct answer.

Cardiff (spelled Caerdydd in Welsh) is the capital city of Wales. It became Wales's capital in 1955 and is the largest city in Wales, located in the south of the country.

The first Earth Summit, officially known as the United Nations Conference on Environment and Development (UNCED), was held in Rio de Janeiro, Brazil, in June 1992. This historic conference produced key agreements including the Rio Declaration and Agenda 21. Port of Spain is in Trinidad, Dar-es-Salaam is in Tanzania, and Buenos Aires is in Argentina - none hosted the 1992 summit.

The 2010 Nuclear Security Summit was hosted in Washington, D.C., USA. It was attended by leaders from 47 countries and was initiated by President Barack Obama.

The European Union headquarters is located in Brussels, Belgium. This is where the main institutions like the European Commission, European Council, and Council of the European Union are based.

Mogadishu is the capital and largest city of Somalia, located on the Indian Ocean coast. It has been an important port city for centuries and is the countrys political and economic center.