[L,TOWM]

There is debate about where it started — SoCal, Australia, and Brazil all have legit cases to be made.

[Bigg Red]

From volleyball.org:

Early 1920s

Most accounts place the sport’s origin in Santa Monica, California,
where the first Volleyball courts were put up on the beach
at the Playground (Santa Monica).
Families played 6 vs. 6.