How did Australia become so rich, prosperous and powerful?

Since the 19th century Australia has had one of the largest economic growths and internal developments in the history of mankind, this island went from being a simple British penal colony to being one of the largest powers today, but how was this? possible?

Sources:

[originalsusser]

OK presentation for a light skim, I did enjoy all the old archival footage but I agree with Artemis that the voice over was terrible, sounded artificial, next time try a human

[Nochancet.v]

Do english accent for documentary ppl belive it better american accent just screams could do better