There have never been any other nations within Australia, but neither has Australia always been one nation. Prior to Federation of the states on 1 January 1901, Australia was made up of six separate, self-governing colonies.
Yes, Australia is a nation-state.
Australia has always been a free country and hopefully will always be one.
Australia is all one nation.
Australia is a nation all on its own - there is only one nation in Australia.
It has been in the world for a long time and it didn't come from one nation. A recent outbreak came from Australia.
Debatable, but Australia is deemed "One Continent, One Nation"
Antarctica has no nations. Australia is one nation.
Australia is a continent that consists of just one nation, which is also named Australia.
Pakistan has one nation and two states, which are Punjab and Sindh.
Tasmania is one of the states of Australia.
Australia is the smallest continent and it is also an island. Of all the continents, Australia is the only one that consists of one nation and is not divided into different countries.
That'd be Australia
Australia.