
Australia became a self-governing nation on January 1, 1901, when six British colonies—New South Wales, Victoria, Queensland, South Australia, Western Australia, and Tasmania—united to form the Commonwealth of Australia. This process, known as Federation, resulted in the creation of Australia as a constitutional monarchy with a federal system of governance. The Commonwealth of Australia Constitution Act 1900, passed by the British Parliament and signed by Queen Victoria on July 9, 1900, enabled the six colonies to collectively govern themselves while remaining part of the British Empire.
| Characteristics | Values |
|---|---|
| Date | 1 January 1901 |
| Forming Colonies | Six British colonies - New South Wales, Queensland, South Australia, Tasmania, Victoria, and Western Australia |
| Federation | The colonies united to form the Commonwealth of Australia, establishing a federal system with a national government and six state governments |
| Government | A constitutional monarchy with a parliamentary democracy; Queen Victoria was the first monarch of the Commonwealth of Australia |
| Constitution | The Commonwealth of Australia Constitution Act was passed by the British Parliament and gave the country the power to govern itself while remaining part of the British Empire |
| Independence | Gained legislative independence from the UK with the passage of the Statute of Westminster in 1931, and the last ties with the UK regarding legal matters were cut with the Australia Act of 1986 |
| Sovereignty | Australia is a sovereign country and a federal parliamentary constitutional monarchy |
| Head of State | The monarch of the United Kingdom served as the head of state until 1961, when the role was separated, and a separate monarch of Australia was appointed |
| Current Monarch | King Charles III |
| Governor-General | The monarch is represented by the Governor-General, currently David Hurley |
| Prime Minister | The current Prime Minister is Anthony Albanese |
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What You'll Learn

Australia's Federation
Australia became a nation and a Commonwealth country on 1 January 1901. This event is known as Federation and resulted in the creation of Australia as a constitutional monarchy with the monarch as the Head of State. The process of Australia's Federation was one of deliberation, consultation, and debate, involving referendums in which the Australian people decided to join together as a nation.
In the late 19th century, Australia consisted of six self-governing British colonies: Queensland, New South Wales, Victoria, Tasmania, South Australia (which also governed what is now the Northern Territory), and Western Australia. These colonies had their own distinct laws, railway gauges, postage stamps, and tariffs. The differences between the colonies led to discussions about the benefits of uniting as a nation under a federal system of governance. The colonies of New Zealand and Fiji were also part of the Federation discussions, but they ultimately decided not to join.
The first steps towards Federation were taken in 1853 when a select committee was formed to draft a new constitution for New South Wales, proposing a General Assembly of the Australian Colonies to legislate on intercolonial matters. In 1857, a NSW Parliamentary Select Committee reported in favour of establishing a federal assembly, but the question was shelved due to a change in government. In 1880, the Australian Natives' Association, composed of white men born in Australia, committed itself to Federation.
The Australasian Federation Conference was held in Melbourne in 1890, with delegates from the six Australian colonies and the colony of New Zealand discussing the idea of uniting the colonies. The first National Australasian Convention was held in Sydney in March and April 1891, attended by delegates from each of the colonies and the New Zealand Parliament. During this convention, Edmund Barton, who would become Australia's first prime minister, coined the phrase, "a nation for a continent and a continent for a nation."
The Commonwealth of Australia Constitution Act 1900 was passed by the British Parliament on 5 July 1900 and signed by Queen Victoria on 9 July 1900. On 1 January 1901, the British Parliament passed legislation allowing the six Australian colonies to govern collectively in their own right as the Commonwealth of Australia. The new constitution established a federal government with defined powers, including external affairs, defence, immigration, taxation, race, and customs and excise. The federal government was also given the power to make laws for Australia's territories, while the former colonies, now renamed 'states', retained power over specific areas within their borders, such as police, hospitals, education, and public transport.
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The Commonwealth of Australia Constitution Act 1900
Australia became a nation on 1 January 1901 when six British colonies—New South Wales, Victoria, Queensland, South Australia, Western Australia, and Tasmania—united to form the Commonwealth of Australia. This process is known as Federation.
The Constitution of Australia, also known as the Commonwealth Constitution, is the fundamental law that governs the political structure of Australia. It establishes the country as a federation under a constitutional monarchy governed by a parliamentary system.
The Constitution was drafted between 1891 and 1898 at a series of conventions conducted by representatives of the six self-governing British colonies in Australia. The final draft was then approved by each state in a series of referendums from 1898 to 1900. The agreed constitution was transmitted to London, where, after some modifications, it was enacted as section 9 of the Commonwealth of Australia Constitution Act 1900.
The Commonwealth of Australia was proclaimed by the Governor-General, Lord Hopetoun, on 1 January 1901, and Edmund Barton was sworn in as Australia's first prime minister.
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The six British colonies
Australia became a nation on 1 January 1901 when six British colonies—New South Wales, Victoria, Queensland, South Australia, Western Australia, and Tasmania—united to form the Commonwealth of Australia. This process is known as Federation.
The six colonies had established themselves as separate self-governing colonies, with their own distinct laws, railway gauges, postage stamps, and tariffs. They were almost like six separate countries, each with its own government and defence force. However, they were still subject to the law-making power of the British Parliament.
The differences between the colonies caused problems, leading to discussions about the benefits of uniting as a nation under a federal system of governance. The colonies of New Zealand and Fiji were also part of these discussions, but they ultimately decided not to join the federation.
The first steps towards Federation were taken in 1853 when a select committee was formed to draft a new constitution for New South Wales. This proposed a General Assembly of the Australian Colonies to legislate on intercolonial matters, including tariffs, railways, and postal services. In 1857, a NSW Parliamentary Select Committee reported in favour of a federal assembly, but the question was shelved when the government changed.
In 1890, the Australasian Federation Conference was held in Melbourne, bringing together delegates from the six Australian colonies and the colony of New Zealand. Notable Federation advocate Henry Parkes attended this conference, and the idea of a united Australia began to gain momentum. The first National Australasian Convention was held in Sydney in 1891, with delegates from each of the colonies and the New Zealand Parliament. Edmund Barton, who would become Australia's first Prime Minister, coined the phrase "a nation for a continent and a continent for a nation".
The Commonwealth of Australia Constitution Act 1900 was passed by the British Parliament on 5 July 1900 and signed by Queen Victoria on 9 July 1900. The Constitution established a federal government with defined powers, including external affairs, defence, immigration, taxation, race, and customs. On 1 January 1901, the British Parliament passed legislation allowing the six colonies to govern in their own right as part of the Commonwealth of Australia.
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The first Prime Minister
On 1 January 1901, six British colonies—New South Wales, Victoria, Queensland, South Australia, Western Australia, and Tasmania—united to form the Commonwealth of Australia. This process is known as Federation.
Edmund Barton was sworn in as Australia's first prime minister. He was a notable advocate for Federation and coined the catchcry, "a nation for a continent and a continent for a nation". Barton's protectionists formed a government, with Alfred Deakin as Attorney-General. The first federal elections were held in March 1901, resulting in a narrow plurality for the Protectionist Party over the Free Trade Party.
Before Federation, the colonies were almost like six separate countries, each with its own government, laws, defence force, stamps, and tariffs. The colonies had built railways using different gauges, complicating the transport of people and goods across the continent. The process of Federation came about through a series of deliberations, consultations, and debates. The colonies of New Zealand and Fiji were also part of the Federation discussions but ultimately decided not to join.
The first National Australasian Convention was held in Sydney in March and April 1891. It was attended by delegates from each of the colonies and the New Zealand Parliament. On 5 July 1900, the British Parliament passed the Commonwealth of Australia Constitution Act 1900, which was signed by Queen Victoria on 9 July 1900. The Constitution of Australia came into force on 1 January 1901, when the colonies collectively became states of the Commonwealth of Australia.
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The Commonwealth of Nations
Australia officially became a commonwealth country on 1 January 1901. On this date, six British colonies—New South Wales, Victoria, Queensland, South Australia, Western Australia, and Tasmania—united to form the Commonwealth of Australia. This process is known as Federation.
The Commonwealth of Australia has three separate and equal branches: the Parliament, the Executive, and the Judicature. The Legislature consists of a House of Representatives and a Senate. The federal government was also given the power to make laws for Australia's territories, although it did not have the power to make laws regarding Indigenous people.
The journey towards Federation began in the mid-19th century, with the six colonies that would eventually unite to form the Commonwealth of Australia as states, each having their own governments, laws, defence forces, postage stamps, and tariffs. These differences caused complications, leading to discussions about the benefits of uniting as a nation under a federal system of governance. In 1889, Sir Henry Parkes gave a rousing address, calling for "a great national government for all Australians", which provided the momentum that led to Australia becoming a nation. This led to the Australasian Federation Conference in Melbourne in 1890, which agreed that "the interests and prosperity of the Australian colonies would be served by an early union under the crown".
A draft constitution was written by Queensland Premier Sir Samuel Griffith, based on a version by Tasmanian delegate Andrew Inglis Clark, who was inspired by the federal model of the United States. The constitution established a federal system of government, with a federal Parliament comprising the monarch (represented by the Governor-General), a Senate, and a House of Representatives.
The Commonwealth of Australia is a member of the Commonwealth of Nations, along with other international groups including the United Nations, the G20, the OECD, the World Trade Organization, and the Pacific Islands Forum.
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Frequently asked questions
Australia became a Commonwealth country on 1 January 1901.
Before 1901, Australia was made up of six self-governing British colonies: New South Wales, Victoria, Queensland, South Australia, Western Australia, and Tasmania.
The six colonies that united to form the Commonwealth of Australia kept the systems of government they had developed as separate colonies, but they also agreed to have a federal government that was responsible for matters concerning the whole nation.











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