<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> The Government of the Commonwealth of Australia (also referred to as the Australian Government, the Commonwealth Government, the Federal Government, and formally Her Majesty's Government) is the government of the Commonwealth of Australia, a federal parliamentary constitutional monarchy . </P> <P> The Commonwealth of Australia was formed in 1901 as a result of an agreement among six self - governing British colonies, which became the six states . The terms of this contract are embodied in the Australian Constitution, which was drawn up at a Constitutional Convention and ratified by the people of the colonies at referendums . The Australian head of state is the Queen of Australia who is represented by the Governor - General of Australia, with executive powers delegated by constitutional convention to the Australian head of government, the Prime Minister of Australia . </P>

What is australia's system of government called
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