what is the main feature of a federation
Federation A federation (also known as a federal state) is a political entity characterized by a union of partially self-governing states or regions under a central (federal) government. In a federation, the self-governing status of the component states, as well as the division of power between them and the central government, is typically constitutionally entrenched and may not be altered by a unilateral decision of either party, the states or the federal political body. Alternatively, federation is a form of government in which sovereign power is formally divided between a central authority and a number of constituent regions so that each region retains some degree of control over its internal affairs.[1][2]
States and territories of Australia Australia (officially known as the Commonwealth of Australia) is a federation of six states, together with ten federal territories. The Australian mainland consists of five of the six federated states and three of the federal territories (the "internal" territories). The state of Tasmania is an island about 200 kilometres (120Â mi) south of the mainland. The remaining seven territories are classified for some purposes as "external" territories. Aside from the Australian Antarctic Territory, which is Australia's claim to part of Antarctica, Australia is the world's sixth-largest country by total area.