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Introduction

Australia, officially the Commonwealth of Australia, is a country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands. It has a land area of 7,688,287 km2 (2,968,464 sq mi), making it the sixth-largest country in the world. Australia is the world's flattest and driest inhabited continent. It is a megadiverse country, and its size gives it a wide variety of landscapes and climates including deserts in the interior and tropical rainforests along the coast.
The ancestors of Aboriginal Australians began arriving from Southeast Asia 50,000 to 65,000 years ago, during the Last Glacial Period. By the time of British settlement, Aboriginal Australians spoke more than 250 distinct languages and had one of the oldest living cultures in the world. Australia's written history commenced with Dutch exploration of most of the coastline in the 17th century. British colonisation began in 1788 with the establishment of the penal colony of New South Wales. By the mid-19th century, most of the continent had been explored by European settlers and five additional self-governing British colonies were established, each gaining responsible government by 1890. The colonies federated in 1901, forming the Commonwealth of Australia. This continued a process of increasing autonomy from the United Kingdom, highlighted by the Statute of Westminster Adoption Act 1942, and culminating in the Australia Act 1986.
Australia is a parliamentary democracy with a constitutional monarchy, and a federation comprising six states and ten territories. Its population of almost 28 million is highly urbanised and heavily concentrated on the eastern seaboard. Canberra is the nation's capital, while its most populous cities are Sydney and Melbourne, each with a population of more than five million. Australia's culture is diverse, and the country has one of the highest foreign-born populations in the world. It has a highly developed economy and one of the highest per capita incomes globally. Its abundant natural resources and well-developed international trade relations are crucial to the country's economy. It ranks highly for quality of life, health, education, economic freedom, civil liberties and political rights.
Featured article -
The O-Bahn Busway is a guided busway that is part of the bus rapid transit system servicing the northeastern suburbs of Adelaide, South Australia. The O-Bahn system was conceived by Daimler-Benz to enable buses to avoid traffic congestion by sharing tram tunnels in the German city of Essen. (Full article...)
Selected biography -

Lieutenant General Sir James Whiteside McCay, KCMG, KBE, CB, VD (21 December 1864 – 1 October 1930), who often spelt his surname M'Cay, was an Australian general and politician. (Full article...)
Did you know (auto-generated) -
- ... that Aboriginal Australians who first saw herds of water buffalo interpreted the new animals as a manifestation of their dreaming?
- ... that Australia allows some Indonesian fishers to operate near the Ashmore and Cartier Islands, but only if their boats have no motor or engine?
- ... that South Australian politician Carlos Quaremba said of his childhood, "I was the only wog in the whole school"?
- ... that a Uruguayan-born victim of the September 11 attacks had founded a community in Sydney to help Uruguayans immigrating to Australia?
- ... that Mabel Forrest wrote poetry that combined the Australian bush landscape with symbols of witchcraft and Celtic mythology?
- ... that the Australian spider Progradungula barringtonensis has been called a "ghost of Gondwana"?
- ... that the Greco-Australian dialect, a variety of Modern Greek, blends words with English roots into the Greek language?
- ... that the poem "Ozymandias" and the birthplace of Pythagoras inspired an Australian sculpture?
In the news
- 18 May 2026 – Australia–China relations
- Australian treasurer Jim Chalmers orders several China-linked shareholders to divest their stakes in Northern Minerals under foreign investment laws aimed at protecting the country's rare earths sector. (AFP via HKFP)
- 16 May 2026 – Shark attacks in Australia
- A 38-year-old man is killed in a shark attack at a reef near Rottnest Island, Western Australia. The shark is reported to have been a 13-foot (4.0 m) great white shark, according to the DPIRD. (BBC News)
- 9 May 2026 – 2026 Farrer by-election
- Farrer MP David Farley becomes the first One Nation candidate elected to the Australian House of Representatives. (ABC News Australia)
- 4 May 2026 – Australia–Japan relations
- Australia and Japan sign agreements on energy and critical minerals. (Reuters)
- 1 May 2026 – Killing of Kumanjayi Little Baby
- Members of Alice Springs' Aboriginal community in Northern Territory, Australia, clash with police outside a hospital where a man charged with the murder of a five-year-old Warlpiri girl is being treated, demanding the suspect be punished under traditional law. This follows a five-day search for the missing girl with large community participation before she was confirmed dead. (The Guardian)
- 29 April 2026 –
- Two people are killed and 11 others are injured when a Diamond DA42 Twin Star crashes into a hangar at Parafield Airport in South Australia. (BBC News)
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On this day
- 1856 – First Parliament of New South Wales opened by the governor, Sir William Denison.
- 1901 – The foundation stone for St John's Cathedral, Brisbane was laid by the Duke of Cornwall and York, the church celebrated 100 years of construction in 2006, and is only gothic-style stone building under construction anywhere in the world.
- 1998 – Murray Gleeson is appointed as the eleventh Chief Justice of Australia.
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WikiProject
Consider joining WikiProject Australia, a WikiProject dedicated to improving Wikipedia's coverage of topics related to Australia. The project page and its subpages contain suggestions on formatting and style of articles, which can be discussed at the project's notice board. To participate, simply add your name to the project members page.
As of 22 May 2026, there are 216,539 articles within the scope of WikiProject Australia, of which 604 are featured and 958 are good articles. This makes up 3.01% of the articles on Wikipedia, 5.15% of all featured articles and lists, and 2.18% of all good articles (see WP:AUSFG). Including non-article pages, such as talk pages, redirects, categories, etc., there are 564,628 pages in the project.
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