12
a long time
230 years
over 2000 years
58 years
It is not known how aboriginals ended up in Australia, as it is an island. It is assumed that they have been there for many thousands of years, migrating from Asia.
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Because Australia has been isolated from the rest of the world for many thousands of years.
17 animals have been etinct in the past 200 years
that only let white people enter the country
Africa is -not- a country, it is a continent.
There is only one country in Australia: Australia.
Australia changed to decimal currency in February 1966. Therefore, in February 2014, it will have been 48 years since Australia changed its currency.