Government of Australia
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.
Federation of Australia
The "Commonwealth of Australia Constitution Act (UK)" was passed on 5 July 1900 and given Royal Assent by Queen Victoria on 9 July 1900. It was proclaimed on 1 January 1901 in Centennial Park, Sydney. Sir Edmund Barton was sworn in as the interim Prime Minister, leading an interim Federal ministry of nine members.