Australia

[Tiberius]

Umm... No?

Sorry, all this semantic wrangling is making things more confused than they need be.

IMHO, if she says "say, Australia", she's making it clear that Australia is a hypothetical case and didn't really hold back.

No, she's just saying that it did eventually join, but that in her hypothetical it did not. Nothing about her statement precludes Australia from having been the last holdout.

I don't think she's saying that Australia was the last to join. Let's have a look at her exact line...

[...]what if one of the old nation-states, say Australia, had decided not to join the World Government in twenty-one fifty?​

It seems to me that she's just picking the name Australia out of a hat. She could have easily picked Peru, Spain or Djibouti. To me, the whole thing is a hypothetical. The country and the idea that there was a hold out. All we can get from this is that a world government was formed in 2150.

 

[Temis the Vorta]

Dude it's 2150. The Queen is dead.

Not since she became a cyborg.