Australia’s location is important for the world’s exports, and its international trade is also important. Since Australia has a large territory with vast, uninhabited areas, all towns are scattered around. This leads to huge expenses for transportation when using trains and ferries. The government also have to pay large amounts for its telecommunications to build up the catching between these regions. The Australian people are mainly living in five cities: Melbourne, Sydney, Perth and Brisbane and Adelaide. The most special one is Perth, which is one of the most isolated cities in the world. However, this does not affect its state to be one of the largest cities in Australia. Most large companies, like the two leading companies, Telstra and Qantas, they are both based in Perth.