Australia(Oceania) is the smallest continent in the world and the sixth largest country in the world,comprising of 17 countries.Here is the 列表 of 17 countries in Australia and their capitals.
North America is the third largest continent in the world , comprising of 23 countries.Here is the 列表 of 23 countries in North America and their capitals.
South America is the fourth-largest continent in the world,comprising of 14 countries.Here is the 列表 of 14 countries in South America and their capitals.