Thanks for your interest in the three levels of government—an important part of how Australia is governed. The three levels are:
The Australian Parliament makes laws about matters that affect all Australians, such as foreign affairs, defence and Medicare. State/territory parliaments are responsible for matters that affect people who live in that state or territory, such as hospitals, police and roads; and local councils and shires control local matters such as garbage collection and libraries. Many people are involved in the work of each level of government.
Want more information? This fact sheet about the three levels of government includes links to each state and territory parliament.