The Flood
Australia suffered greatly from the Flood, with a massive drought that left the Australian interior virtually uninhabitable, while coastal cities such as Darwin and Sydney were threatened by the rising tides.
The large amount of the population sought a last resort investment to construct large and technologically advanced underground cities to help people escape from the harsh climates of the drought . One of which were located inland Australia burrowed in the Blue Mountains. However approximately 20 million Australians took advantage of the demand of labour in North America and left the country.