The reason that "Hello, World" is a C thing is that C is the source of the tradition around that phrase. In Kernighan and Richie's "The C Programming Language" printing "Hello, World" is the very first exercise.
It's actually a B thing https://news.ycombinator.com/item?id=27048024
It's actually a B thing https://news.ycombinator.com/item?id=27048024