I think the answer is B.
Because one of the factors that has prevented it from being a more unified country is its geography. It's rugged, mountainous. It's very difficult for any invading army to develop or control it.
Yeah I don’t think I have a good idea but I’m still
Answer: prosperity
The economy of Australia is characterized not only by high unemployment rate, low unemployment rate nor foreign subsidies but by prosperity. The economic prosperity enjoyed by Australia is due to the high industrialization of the country and its modern technologies.