Australia---the World's Largest Island The Commonwealth of Australia is made up of six states.Five are on the mainland-New South Wales,Victoria, QueensTand,South Australia and Western Australia.The sixths the island state of Tasmania.there are also two territories onmalmand In the north is the largecu Territory.In the somtis the small Australian Capitalsrench includes CanberrataAustralia---the World’s Largest Island The Commonwealth of Australia is made up of six states. Five are on the mainland-New South Wales, Victoria, Queensland, South Australia, and Western Australia. The sixth is the island state of Tasmania. There are also two territories on the mainland. In the north is the large Northern Territory. In the southeast is the small Australian Capital Territory, which includes Canberra, the federal capital