no
Iowa is a state, (one of fifty), in the country of the United States of America.
Australia is just one country - Australia. It is not the same as the geographical region of Oceania, although it is within Oceania.
Brazil, that's is the only one, at least officially
On the continent of Australia there is one country: Australia.
it is a rural yet urban,coastal yet inland country
Australia is an island continent with only one country, Australia, on it.
The Vatican has between 800 and 850 permanent residents, which is a low population. However, the country is very small (0.17 square mile) and is, actually, one of the most densely populated countries on earth.
There is only room for one most populated country in the world.
There is only one country in Australia, and that is Australia.
The least populated area in England is likely to be Northumberland, which is a county located in the North East of England known for its vast areas of rural and sparsely populated landscapes, including the Northumberland National Park.
Australia is the only continent with just one country, which is Australia itself.