Today is a Public Holiday in Australia to celebrate the birthday of Elizabeth II who is Queen of Australia.
. The Queen of Australia is the Sovereign according to the Constitution of Australia which is considered to be one of the cleverest agreements ever designed.
While there is still a minority of people in Australia who nostalgically debate the relative merits of two ancient forms of government: republics vs monarchies, the majority of contemporary Australian electors have recently affirmed their commitment to our own unique and highly evolved form of government – our commonwealth – which is the envy of the modern world of the 21st Century.
The Commonwealth of Australia is a constitutional monarchy. The Governor-General is Head of State and Commander-in-Chief of the Australian Defence Force.
The Queen is Sovereign of Australia.
Unlike the United Kingdom, which has no constitution, Australia is not a such a monarchy. Nor is Australia like the United States of America, which has a constitution, but is still a republic. Australia, having evolved beyond both these models of government, is a modern commonwealth with a unique constitution of its own design.