It was US only as you had to have a .edu email address to join, which most universities around the world did not get as it was mostly a US thing. It took forever for them to open up to non-US universities.
It would of been nice keep it that way. MySpace was just fine.
The hook that Facebook had over MySpace (and the million other "Social Network" platforms of that day) was that you couldn't embed shitty HTML intot he profile