None. All countries in South America have a capital city.
All African countries, and any country for that matter, has a capital city.
Madrid is the capital city of Spain. It is recorded on all maps and the European Union's list of countries.
MadridMany capital cities are not on coastlines. All landlocked countries for instance.
No country is the capital of Asia. First, Asia is a continent with many countries. Second, a capital is a city, not a country. As Asia is not a country, then it does not have a capital city. The countries in Asia would each have their own capital cities, but there is no one city that is the capital of Asia.
Only countries have capital cities. The world consists of many countries, all with their own capitals. None of them would be considered the capital of the world.
Colombia's capital city is Bogotá.
That is the capital and largest city in Nepal.
Manila is the capital of the Philippines.
Managua is the capital city of Nicaragua.
Quito is the capital city of Ecuador.
Ireland is a country, not a city, and Europe is a continent not a country, so Ireland is not the capital city of anywhere, and Europe does not have a capital city. Ireland is a country in Europe. Dublin is the capital of Ireland and the various other countries in Europe all have their own capital cities.