Flags are famous for their countries because they are symbols of their countries. Each country has a unique symbol to take pride in.
You can see the flags of all the countries participating in the FIFA World Cup 2010 in the related link.
The U.S. has 6. No other countries have flags there.
Countries have flags, deserts do not.
I'm happy to help with flag questions. However, there are 195 countries in the world, each with its own flag. It would be quite extensive to list them all here. If you have a specific flag or country in mind, please let me know, and I can provide information on that particular flag.
the flags
Flags designs from various countries can be bought at many places online. Us Flags, Flags Importer and Lady Liberty Flag all carry flags that are made to United Nations specifications.
They represent all the colors of all the flags of all the countries in the world.
all countries have flags, It shows the country's sovereignty and nationality.
Yes, although they're not required, there aren't any countries that don't have an official flag. The biggest stand-out is Nepal which has a flag, but it's not rectangular like all the other countries' flags are.
All national flags should be at the same height, and the same size.
The flags of Switzerland and Vatican City are both square in shape.
There are many places where one could find flags of different countries. One who is looking to find flags of different countries should visit on the web sources such as Flags Importer and World Atlas.