It is called the FIVB (Fédération Internationale de Volley Ball). You can find information relative to the federation on the following website: http://www.fivb.org/
All I know is that Volleyball originated In the United States in 1996.
unfortunately as skilled as the australian players are , we dont have a competitive olympic team from australia..
There is one volleyball on the court that is shared between two teams. But they can have an infinite number of volleyballs in practice.
Volley is when you get down and it's also a ball