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116-512: Before colonisation, imprisonment was used in sub-Saharan Africa for pre-trial detention, to secure compensation and as a last resort but not generally as punishment, except in the Songhai Empire (1464–1591) and in connection with the slave trade. In the colonial period, imprisonment provided a source of labor and a means of suppression. The use of imprisonment has continued to the present day. Incarceration in what became known as Australia

232-479: A Mediterranean climate . The south-east ranges from oceanic (Tasmania and coastal Victoria) to humid subtropical (upper half of New South Wales), with the highlands featuring alpine and subpolar oceanic climates . The interior is arid to semi-arid . Driven by climate change , average temperatures have risen more than 1°C since 1960 . Associated changes in rainfall patterns and climate extremes exacerbate existing issues such as drought and bushfires . 2019

348-525: A belt of Brigalow grasslands lie between the coast and the mountains, while inland of the dividing range are large areas of grassland and shrubland. These include the western plains of New South Wales, and the Mitchell Grass Downs and Mulga Lands of inland Queensland. The northernmost point of the mainland is the tropical Cape York Peninsula . The landscapes of the Top End and

464-824: A large wave of immigration from across Europe , with such immigrants referred to as " New Australians ". This required a relaxation of the white Australia policy , which was justified to Australians using the slogan "populate or perish". A member of the Western Bloc during the Cold War , Australia participated in the Korean War and the Malayan Emergency during the 1950s and the Vietnam War from 1962 to 1972. During this time, tensions over communist influence in society led to unsuccessful attempts by

580-479: A prisoner exchange . Prisoners serving a full life or indefinite sentence may never be released. Released prisoners may suffer from issues including psychiatric disorders, criminalized behaviours and access to basic needs. Some criminals, particularly criminals convicted of serious crimes ( felonies or indictable offenses ,) are given restrictions after release, including bans from buying firearms or jury duty exclusion. Post release resources may be provided by

696-461: A date which later became Australia's national day . Most early settlers were convicts , transported for petty crimes and assigned as labourers or servants to "free settlers" (willing immigrants). Once emancipated , convicts tended to integrate into colonial society. Convict rebellions and uprisings were suppressed under martial law, which lasted for two years following the 1808 Rum Rebellion , Australia's only successful coup d'état . During

812-498: A population of more than 5 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 market 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. Australia

928-527: A result of melting ice, the land has continued to rise yearly in Scandinavia, mostly in northern Sweden and Finland, where the land is rising at a rate of as much as 8–9 mm per year, or 1 m in 100 years. This is important for archaeologists, since a site that was coastal in the Nordic Stone Age now is inland and can be dated by its relative distance from the present shore. The term Würm

1044-581: A settlement was established in Van Diemen's Land (present-day Tasmania ), and in 1813, Gregory Blaxland , William Lawson and William Wentworth crossed the Blue Mountains west of Sydney, opening the interior to European settlement. The British claim extended to the whole Australian continent in 1827 when Major Edmund Lockyer established a settlement on King George Sound (modern-day Albany ). The Swan River Colony (present-day Perth )

1160-562: A short distance off the north-east coast and extends for more than 2,000 km (1,200 mi). Mount Augustus , claimed to be the world's largest monolith, is located in Western Australia. At 2,228 m (7,310 ft), Mount Kosciuszko is the highest mountain on the Australian mainland. Even taller are Mawson Peak , at 2,745 m (9,006 ft), on the remote Australian external territory of Heard Island , and, in

1276-797: A still lesser extent, glaciers existed in Africa, for example in the High Atlas , the mountains of Morocco , the Mount Atakor massif in southern Algeria , and several mountains in Ethiopia . Just south of the equator, an ice cap of several hundred square kilometers was present on the east African mountains in the Kilimanjaro massif , Mount Kenya , and the Rwenzori Mountains , which still bear relic glaciers today. Glaciation of

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1392-492: A total area of 7,688,287 km (2,968,464 sq mi), making it the sixth-largest country in the world and the largest country by area in Oceania . It is the world's oldest, flattest, and driest inhabited continent, with some of the least fertile soils. 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

1508-411: A wide variety of landscapes, with tropical rainforests in the north-east, mountain ranges in the south-east, south-west and east, and desert in the centre. The desert or semi-arid land commonly known as the outback makes up by far the largest portion of land. Australia is the driest inhabited continent; its annual rainfall averaged over continental area is less than 500 mm. The population density

1624-436: Is 3.4 inhabitants per square kilometre, although the large majority of the population lives along the temperate south-eastern coastline. The population density exceeds 19,500 inhabitants per square kilometre in central Melbourne. In 2021 Australia had 10% of the global permanent meadows and pastureland. Forest cover is around 17% of Australia's total land area. The Great Barrier Reef , the world's largest coral reef, lies

1740-413: Is a constitutional monarchy , a parliamentary democracy and a federation . The country has maintained its mostly unchanged constitution alongside a stable liberal democratic political system since Federation in 1901. It is one of the world's oldest federations, in which power is divided between the federal and state governments. The Australian system of government combines elements derived from

1856-909: Is a middle power , and has the world's thirteenth-highest military expenditure . It is a member of international groups including the United Nations; the G20 ; the OECD ; the World Trade Organization ; Asia-Pacific Economic Cooperation ; the Pacific Islands Forum ; the Pacific Community ; the Commonwealth of Nations ; and the defence and security organisations ANZUS , AUKUS , and the Five Eyes . It

1972-409: Is a tort called false imprisonment . In England and Wales, a much larger proportion of the black population is imprisoned than of the white. When a prisoner completes serving their sentence, start probation, or is given a compassionate release they are no longer considered prisoners and are released to the outside world. A prisoner of war may be released as a result of the end of hostilities or

2088-753: Is also a major non-NATO ally of the United States. The name Australia (pronounced / ə ˈ s t r eɪ l i ə / in Australian English ) is derived from the Latin Terra Australis ( ' southern land ' ), a name used for a hypothetical continent in the Southern Hemisphere since ancient times. Several 16th-century cartographers used the word Australia on maps, but not to identify modern Australia. When Europeans began visiting and mapping Australia in

2204-605: Is derived from a river in the Alpine foreland, roughly marking the maximum glacier advance of this particular glacial period. The Alps were where the first systematic scientific research on ice ages was conducted by Louis Agassiz at the beginning of the 19th century. Here, the Würm glaciation of the LGP was intensively studied. Pollen analysis , the statistical analyses of microfossilized plant pollens found in geological deposits, chronicled

2320-699: Is governed by convention and their precise scope is unclear. The most notable exercise of these powers was the dismissal of the Whitlam government in the constitutional crisis of 1975 . Last Glacial Period The Last Glacial Period ( LGP ), also known as the Last glacial cycle , occurred from the end of the Last Interglacial to the beginning of the Holocene , c.  115,000  – c.  11,700 years ago, and thus corresponds to most of

2436-629: Is one of only two pristine Archaean 3.6–2.7 Ga (billion years ago) crusts identified on the Earth. Having been part of all major supercontinents , the Australian continent began to form after the breakup of Gondwana in the Permian , with the separation of the continental landmass from the African continent and Indian subcontinent. It separated from Antarctica over a prolonged period beginning in

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2552-568: Is the restraint of a person's liberty . The 17th century book Termes de la Ley contains the following definition: Imprisonment is no other thing than the restraint of a man's liberty, whether it be in the open field, or in the stocks, or in the cage in the streets or in a man's own house, as well as in the common gaols; and in all the places the party so restrained is said to be a prisoner so long as he hath not his liberty freely to go at all times to all places whither he will without bail or mainprise or otherwise. Imprisonment without lawful cause

2668-617: Is uncertain how many waves of immigration may have contributed to these ancestors of modern Aboriginal Australians. The Madjedbebe rock shelter in Arnhem Land is possibly the oldest site showing the presence of humans in Australia. The oldest human remains found are the Lake Mungo remains , which have been dated to around 41,000 years ago. Aboriginal Australian culture is one of the oldest continuous cultures on Earth. At

2784-411: Is unique. About 85% of flowering plants, 84% of mammals, more than 45% of birds , and 89% of in-shore, temperate-zone fish are endemic . Australia has at least 755 species of reptile, more than any other country in the world. Besides Antarctica, Australia is the only continent that developed without feline species. Feral cats may have been introduced in the 17th century by Dutch shipwrecks, and later in

2900-563: The Statute of Westminster Adoption Act 1942 , and culminating in the Australia Acts of 1986. Australia is a federal parliamentary democracy and constitutional monarchy comprising six states and ten territories . Its population of more than 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 , both with

3016-661: The Admiralty agreed that the continent should be known officially by that name. The first official published use of the new name came with the publication in 1830 of The Australia Directory by the Hydrographic Office . Colloquial names for Australia include " Oz ", " Straya " and " Down Under ". Other epithets include "the Great Southern Land", "the Lucky Country" (from the 1964 book of

3132-1024: The Central Rocky Mountains ), Wisconsinan or Wisconsin (in central North America), Devensian (in the British Isles), Midlandian (in Ireland), Würm (in the Alps ), Mérida (in Venezuela ), Weichselian or Vistulian (in Northern Europe and northern Central Europe), Valdai in Russia and Zyryanka in Siberia , Llanquihue in Chile , and Otira in New Zealand. The geochronological Late Pleistocene includes

3248-595: The Gulf Country —with their tropical climate—include forest, woodland, wetland, grassland, rainforest and desert. At the north-west corner of the continent are the sandstone cliffs and gorges of The Kimberley , and below that the Pilbara . The Victoria Plains tropical savanna lies south of the Kimberley and Arnhem Land savannas, forming a transition between the coastal savannas and the interior deserts. At

3364-599: The Himalayas , and other formerly glaciated regions around the world. The glaciations that occurred during this glacial period covered many areas, mainly in the Northern Hemisphere and to a lesser extent in the Southern Hemisphere. They have different names, historically developed and depending on their geographic distributions: Fraser (in the Pacific Cordillera of North America), Pinedale (in

3480-551: The Indian Ocean Dipole and the El Niño–Southern Oscillation , which is correlated with periodic drought , and the seasonal tropical low-pressure system that produces cyclones in northern Australia. These factors cause rainfall to vary markedly from year to year. Much of the northern part of the country has a tropical, predominantly summer-rainfall ( monsoon ). The south-west corner of the country has

3596-539: The Iraq War from 2003 to 2009. The nation's trade relations also became increasingly oriented towards East Asia in the 21st century, with China becoming the nation's largest trading partner by a large margin. In 2020, during the COVID-19 pandemic , several of Australia's largest cities were locked down for extended periods and free movement across the national and state borders was restricted in an attempt to slow

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3712-558: The Last Glacial Maximum occurring between 26,000 and 20,000 years ago. While the general pattern of cooling and glacier advance around the globe was similar, local differences make it difficult to compare the details from continent to continent (see picture of ice core data below for differences). The most recent cooling, the Younger Dryas , began around 12,800 years ago and ended around 11,700 years ago, also marking

3828-607: The Lesotho Highlands and parts of the Drakensberg . The development of glaciers was likely aided in part due to shade provided by adjacent cliffs. Various moraines and former glacial niches have been identified in the eastern Lesotho Highlands a few kilometres west of the Great Escarpment , at altitudes greater than 3,000 m on south-facing slopes. Studies suggest that the annual average temperature in

3944-664: The Menzies Government to ban the Communist Party of Australia , and a bitter split in the Labor Party in 1955. As a result of a 1967 referendum , the federal government gained the power to legislate with regard to Indigenous Australians, and Indigenous Australians were fully included in the census . Pre-colonial land interests (referred to as native title in Australia) was recognised in law for

4060-727: The Owen Stanley Range , and the Saruwaged Range . Mount Giluwe in the Central Cordillera had a "more or less continuous ice cap covering about 188 km and extending down to 3200-3500 m". In Western New Guinea , remnants of these glaciers are still preserved atop Puncak Jaya and Ngga Pilimsit . Small glaciers developed in a few favorable places in Southern Africa during the last glacial period. These small glaciers would have been located in

4176-532: The Permian and continuing through to the Cretaceous . When the last glacial period ended in about 10,000 BC, rising sea levels formed Bass Strait , separating Tasmania from the mainland. Then between about 8,000 and 6,500 BC, the lowlands in the north were flooded by the sea, separating New Guinea, the Aru Islands , and the mainland of Australia. The Australian continent is moving toward Eurasia at

4292-720: The Sierra Nevada in northern California . In northern Eurasia, the Scandinavian ice sheet once again reached the northern parts of the British Isles , Germany , Poland , and Russia, extending as far east as the Taymyr Peninsula in western Siberia. The maximum extent of western Siberian glaciation was reached by about 18,000 to 17,000 BP, later than in Europe (22,000–18,000 BP). Northeastern Siberia

4408-686: The Territory of Papua and New Guinea in 1949 and gained independence from Australia in 1975. In 1914, Australia joined the Allies in fighting the First World War, and took part in many of the major battles fought on the Western Front . Of about 416,000 who served, about 60,000 were killed and another 152,000 were wounded. Many Australians regard the defeat of the Australian and New Zealand Army Corps (ANZAC) at Gallipoli in 1915 as

4524-528: The Torres Strait Islands . The Dutch charted the whole of the western and northern coastlines and named the island continent " New Holland " during the 17th century, and although no attempt at settlement was made, a number of shipwrecks left men either stranded or, as in the case of the Batavia in 1629, marooned for mutiny and murder, thus becoming the first Europeans to permanently inhabit

4640-732: The Upper Mississippi River , which in turn was formed during an earlier glacial period. In its retreat, the Wisconsin episode glaciation left terminal moraines that form Long Island , Block Island , Cape Cod , Nomans Land , Martha's Vineyard , Nantucket , Sable Island , and the Oak Ridges Moraine in south-central Ontario, Canada. In Wisconsin itself, it left the Kettle Moraine . The drumlins and eskers formed at its melting edge are landmarks of

4756-519: The bombing of Darwin and other Japanese attacks on Australian soil , led to a widespread belief in Australia that a Japanese invasion was imminent , and a shift from the United Kingdom to the United States as Australia's principal ally and security partner. Since 1951, Australia has been allied with the United States under the ANZUS treaty. In the decades following World War II, Australia enjoyed significant increases in living standards, leisure time and suburban development. Governments encouraged

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4872-446: The coast . The ancestors of Aboriginal Australians began arriving from south-east Asia 50,000 to 65,000 years ago, during the last glacial period . By the time of British settlement, Aboriginal Australians spoke 250 distinct languages and had the oldest living culture 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

4988-426: The emu and the kookaburra . Australia is home to many dangerous animals including some of the most venomous snakes in the world. The dingo was introduced by Austronesian people who traded with Indigenous Australians around 3000 BCE . Many animal and plant species became extinct soon after first human settlement, including the Australian megafauna ; others have disappeared since European settlement, among them

5104-479: The governor-general at the federal level and by the governors at the state level, who by section 63 of the Constitution and convention act on the advice of their ministers. Thus, in practice the governor-general acts as a legal figurehead for the actions of the prime minister and the Cabinet. The governor-general may in some situations exercise reserve powers : powers exercisable in the absence or contrary to ministerial advice. When these powers may be exercised

5220-400: The grooves left by these glaciers can be easily observed. In southwestern Saskatchewan and southeastern Alberta, a suture zone between the Laurentide and Cordilleran ice sheets formed the Cypress Hills , which is the northernmost point in North America that remained south of the continental ice sheets. The Great Lakes are the result of glacial scour and pooling of meltwater at the rim of

5336-475: The isostatically depressed area, a temporary marine incursion that geologists dub the Yoldia Sea . Then, as postglacial isostatic rebound lifted the region about 9500 BP, the deepest basin of the Baltic became a freshwater lake, in palaeological contexts referred to as Ancylus Lake , which is identifiable in the freshwater fauna found in sediment cores. The lake was filled by glacial runoff, but as worldwide sea level continued rising, saltwater again breached

5452-483: The "baptism of fire" that forged the new nation's identity . The beginning of the campaign is commemorated annually on Anzac Day , a date which rivals Australia Day as the nation's most important. From 1939 to 1945, Australia joined the Allies in fighting the Second World War. Australia's armed forces fought in the Pacific , European and Mediterranean and Middle East theatres . The shock of Britain's defeat in Singapore in 1942, followed soon after by

5568-503: The "island continent" and is sometimes considered the world's largest island . Australia has 34,218 km (21,262 mi) of coastline (excluding all offshore islands), and claims an extensive exclusive economic zone of 8,148,250 square kilometres (3,146,060 sq mi). This exclusive economic zone does not include the Australian Antarctic Territory . Mainland Australia lies between latitudes 9° and 44° south , and longitudes 112° and 154° east . Australia's size gives it

5684-443: The 17th century, the name Terra Australis was applied to the new territories. Until the early 19th century, Australia was best known as New Holland , a name first applied by the Dutch explorer Abel Tasman in 1644 (as Nieuw-Holland ) and subsequently anglicised. Terra Australis still saw occasional usage, such as in scientific texts. The name Australia was popularised by the explorer Matthew Flinders , who said it

5800-428: The 18th century by European settlers. They are now considered a major factor in the decline and extinction of many vulnerable and endangered native species. Seafaring immigrants from Asia are believed to have brought the dingo to Australia sometime after the end of the last ice age—perhaps 4000 years ago—and Aboriginal people helped disperse them across the continent as pets, contributing to the demise of thylacines on

5916-416: The 2018 Environmental Performance Index . There are more than 1,800 animals and plants on Australia's threatened species list, including more than 500 animals. Paleontologists discovered a fossil site of a prehistoric rainforest in McGraths Flat , in South Australia, that presents evidence that this now arid desert and dry shrubland / grassland was once home to an abundance of life. Australia

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6032-410: The Alpine foreland . Local ice fields or small ice sheets could be found capping the highest massifs of the Pyrenees , the Carpathian Mountains , the Balkan Mountains , the Caucasus , and the mountains of Turkey and Iran . In the Himalayas and the Tibetan Plateau , there is evidence that glaciers advanced considerably, particularly between 47,000 and 27,000 BP, but the exact ages, as well as

6148-500: The Australian Antarctic Territory, Mount McClintock and Mount Menzies , at 3,492 m (11,457 ft) and 3,355 m (11,007 ft) respectively. Eastern Australia is marked by the Great Dividing Range , which runs parallel to the coast of Queensland, New South Wales and much of Victoria. The name is not strictly accurate, because parts of the range consist of low hills, and the highlands are typically no more than 1,600 m (5,200 ft) in height. The coastal uplands and

6264-438: The Australian mainland. The first ship and crew to chart the Australian coast and meet with Aboriginal people was the Duyfken , captained by Dutch navigator Willem Janszoon . He sighted the coast of Cape York Peninsula in early 1606, and made landfall on 26 February 1606 at the Pennefather River near the modern town of Weipa on Cape York. Later that year, Spanish explorer Luís Vaz de Torres sailed through and navigated

6380-524: The Center for Arctic Gas Hydrate, Environment and Climate at the University of Tromsø , published a study in June 2017 describing over a hundred ocean sediment craters, some 3,000 m wide and up to 300 m deep, formed by explosive eruptions of methane from destabilized methane hydrates , following ice-sheet retreat during the LGP, around 12,000 years ago. These areas around the Barents Sea still seep methane today. The study hypothesized that existing bulges containing methane reservoirs could eventually have

6496-474: The Greenland climate was dry during the LGP, with precipitation reaching perhaps only 20% of today's value. The name Mérida glaciation is proposed to designate the alpine glaciation that affected the central Venezuelan Andes during the Late Pleistocene. Two main moraine levels have been recognized - one with an elevation of 2,600–2,700 m (8,500–8,900 ft), and another with an elevation of 3,000–3,500 m (9,800–11,500 ft). The snow line during

6612-570: The LGP as the Devensian . Irish geologists, geographers, and archaeologists refer to the Midlandian glaciation, as its effects in Ireland are largely visible in the Irish Midlands . The name Devensian is derived from the Latin Dēvenses , people living by the Dee ( Dēva in Latin), a river on the Welsh border near which deposits from the period are particularly well represented. The effects of this glaciation can be seen in many geological features of England, Wales, Scotland, and Northern Ireland . Its deposits have been found overlying material from

6728-505: The North American Laurentide ice sheet. At the height of glaciation, the Bering land bridge potentially permitted migration of mammals, including people, to North America from Siberia . It radically altered the geography of North America north of the Ohio River . At the height of the Wisconsin episode glaciation, ice covered most of Canada, the Upper Midwest , and New England , as well as parts of Montana and Washington . On Kelleys Island in Lake Erie or in New York's Central Park ,

6844-410: The Polish River Vistula or its German name Weichsel). Evidence suggests that the ice sheets were at their maximum size for only a short period, between 25,000 and 13,000 BP. Eight interstadials have been recognized in the Weichselian, including the Oerel, Glinde, Moershoofd, Hengelo, and Denekamp. Correlation with isotope stages is still in process. During the glacial maximum in Scandinavia, only

6960-437: The Southern Hemisphere was less extensive. Ice sheets existed in the Andes ( Patagonian Ice Sheet ), where six glacier advances between 33,500 and 13,900 BP in the Chilean Andes have been reported. Antarctica was entirely glaciated, much like today, but unlike today the ice sheet left no uncovered area. In mainland Australia only a very small area in the vicinity of Mount Kosciuszko was glaciated, whereas in Tasmania glaciation

7076-452: The Wisconsin episode. It began about 30,000 years ago, reached its greatest advance 21,000 years ago, and ended about 10,000 years ago. In northwest Greenland, ice coverage attained a very early maximum in the LGP around 114,000. After this early maximum, ice coverage was similar to today until the end of the last glacial period. Towards the end, glaciers advanced once more before retreating to their present extent. According to ice core data,

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7192-422: The authorities. Various factors have been investigated as to their influence on post-release recidivism , such as family and other relationships, employment, housing and ability to quit drug use. Australia Australia , officially the Commonwealth of Australia , is a country comprising the mainland of the Australian continent , the island of Tasmania and numerous smaller islands . Australia has

7308-438: The centre and Phanerozoic sedimentary basins , metamorphic and igneous rocks in the east. The Australian mainland and Tasmania are situated in the middle of the tectonic plate and have no active volcanoes, but due to passing over the East Australia hotspot , recent volcanism has occurred during the Holocene , in the Newer Volcanics Province of western Victoria and south-eastern South Australia. Volcanism also occurs in

7424-420: The colonies was achieved after a decade of planning, constitutional conventions and referendums , resulting in the establishment of the Commonwealth of Australia as a nation under the new Australian Constitution . After the 1907 Imperial Conference , Australia and several other self-governing British settler colonies were given the status of self-governing dominions within the British Empire. Australia

7540-475: The continent. In 1770, Captain James Cook sailed along and mapped the east coast, which he named " New South Wales " and claimed for Great Britain. Following the loss of its American colonies in 1783, the British Government sent a fleet of ships, the First Fleet , under the command of Captain Arthur Phillip , to establish a new penal colony in New South Wales . A camp was set up and the Union Flag raised at Sydney Cove , Port Jackson , on 26 January 1788,

7656-478: The convict system culminated in its abolition in the eastern colonies by the 1850s. Initially a free colony, Western Australia practised penal transportation from 1850 to 1868. The six colonies individually gained responsible government between 1855 and 1890, thus becoming elective democracies managing most of their own affairs while remaining part of the British Empire . The Colonial Office in London retained control of some matters, notably foreign affairs. In

7772-400: The dramatic changes in the European environment during the Würm glaciation. During the height of Würm glaciation, c.  24,000  – c.  10,000  BP, most of western and central Europe and Eurasia was open steppe-tundra, while the Alps presented solid ice fields and montane glaciers. Scandinavia and much of Britain were under ice. During the Würm, the Rhône Glacier covered

7888-459: The early 2010s after the 2000s Australian drought . Although most of Australia is semi-arid or desert, the continent includes a diverse range of habitats from alpine heaths to tropical rainforests . Fungi typify that diversity—an estimated 250,000 species—of which only 5% have been described—occur in Australia. Because of the continent's great age, extremely variable weather patterns, and long-term geographic isolation, much of Australia's biota

8004-539: The end of the LGP and the Pleistocene epoch. It was followed by the Holocene , the current geological epoch . The LGP is often colloquially referred to as the "last ice age", though the term ice age is not strictly defined, and on a longer geological perspective, the last few million years could be termed a single ice age given the continual presence of ice sheets near both poles. Glacials are somewhat better defined, as colder phases during which glaciers advance, separated by relatively warm interglacials . The end of

8120-426: 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

8236-601: The first time when the High Court of Australia held in Mabo v Queensland (No 2) that Australia was neither terra nullius ( ' land belonging to no one ' ) or "desert and uncultivated land" at the time of European settlement. Following the abolition of the last vestiges of the White Australia policy in 1973, Australia's demography and culture transformed as a result of a large and ongoing wave of non-European immigration, mostly from Asia. The late 20th century also saw an increasing focus on foreign policy ties with other Pacific Rim nations. The Australia Acts severed

8352-550: The formation of a single contiguous ice sheet on the Tibetan Plateau, is controversial. Other areas of the Northern Hemisphere did not bear extensive ice sheets, but local glaciers were widespread at high altitudes. Parts of Taiwan , for example, were repeatedly glaciated between 44,250 and 10,680 BP as well as the Japanese Alps . In both areas, maximum glacier advance occurred between 60,000 and 30,000 BP. To

8468-412: The heart of the country are the uplands of central Australia . Prominent features of the centre and south include Uluru (also known as Ayers Rock), the famous sandstone monolith, and the inland Simpson , Tirari and Sturt Stony , Gibson , Great Sandy, Tanami , and Great Victoria deserts, with the famous Nullarbor Plain on the southern coast. The Western Australian mulga shrublands lie between

8584-479: The interior deserts and Mediterranean-climate Southwest Australia . Lying on the Indo-Australian Plate , the mainland of Australia is the lowest and most primordial landmass on Earth with a relatively stable geological history. The landmass includes virtually all known rock types and from all geological time periods spanning more than 3.8 billion years of the Earth's history. The Pilbara Craton

8700-417: The island of New Guinea (considered geologically as part of the Australian continent), and in the Australian external territory of Heard Island and McDonald Islands . Seismic activity in the Australian mainland and Tasmania is also low, with the greatest number of fatalities having occurred in the 1989 Newcastle earthquake . The climate of Australia is significantly influenced by ocean currents, including

8816-505: The last glacial advance was lowered approximately 1,200 m (3,900 ft) below the present snow line, which is 3,700 m (12,100 ft). The glaciated area in the Cordillera de Mérida was about 600 km (230 sq mi); this included these high areas, from southwest to northeast: Páramo de Tamá, Páramo Batallón, Páramo Los Conejos, Páramo Piedras Blancas, and Teta de Niquitao. Around 200 km (77 sq mi) of

8932-555: The last glacial maximum, the Patagonian ice sheet extended over the Andes from about 35°S to Tierra del Fuego at 55°S. The western part appears to have been very active, with wet basal conditions, while the eastern part was cold-based. Cryogenic features such as ice wedges , patterned ground , pingos , rock glaciers , palsas , soil cryoturbation , and solifluction deposits developed in unglaciated extra-Andean Patagonia during

9048-523: The last glacial period, which was about 10,000 years ago, is often called the end of the ice age, although extensive year-round ice persists in Antarctica and Greenland . Over the past few million years, the glacial-interglacial cycles have been "paced" by periodic variations in the Earth's orbit via Milankovitch cycles . The LGP has been intensively studied in North America, northern Eurasia,

9164-627: The late glacial (Weichselian) and the immediately preceding penultimate interglacial ( Eemian ) period. Canada was almost completely covered by ice, as was the northern part of the United States , both blanketed by the huge Laurentide Ice Sheet . Alaska remained mostly ice free due to arid climate conditions. Local glaciations existed in the Rocky Mountains and the Cordilleran ice sheet and as ice fields and ice caps in

9280-555: The location for the future federal capital of Canberra . While it was being constructed, Melbourne served as the temporary capital from 1901 to 1927. The Northern Territory was transferred from the control of South Australia to the Commonwealth in 1911. Australia became the colonial ruler of the Territory of Papua (which had initially been annexed by Queensland in 1883) in 1902 and of the Territory of New Guinea (formerly German New Guinea ) in 1920. The two were unified as

9396-454: The lower Connecticut River Valley . In the Sierra Nevada , three stages of glacial maxima, sometimes incorrectly called ice ages , were separated by warmer periods. These glacial maxima are called, from oldest to youngest, Tahoe, Tenaya, and Tioga. The Tahoe reached its maximum extent perhaps about 70,000 years ago. Little is known about the Tenaya. The Tioga was the least severe and last of

9512-448: The main Wisconsin glacial advance. The upper level probably represents the last glacial advance (Late Wisconsin). The Llanquihue glaciation takes its name from Llanquihue Lake in southern Chile , which is a fan-shaped piedmont glacial lake. On the lake's western shores, large moraine systems occur, of which the innermost belong to the LGP. Llanquihue Lake's varves are a node point in southern Chile's varve geochronology . During

9628-448: The mainland. Australia is also one of 17 megadiverse countries. Australian forests are mostly made up of evergreen species, particularly eucalyptus trees in the less arid regions; wattles replace them as the dominant species in drier regions and deserts. Among well-known Australian animals are the monotremes (the platypus and echidna ); a host of marsupials , including the kangaroo , koala , and wombat , and birds such as

9744-484: The massive Missoula Floods . USGS geologists estimate that the cycle of flooding and reformation of the lake lasted an average of 55 years and that the floods occurred about 40 times over the 2,000-year period starting 15,000 years ago. Glacial lake outburst floods such as these are not uncommon today in Iceland and other places. The Wisconsin glacial episode was the last major advance of continental glaciers in

9860-474: The mid-19th century, explorers such as Burke and Wills charted Australia's interior. A series of gold rushes beginning in the early 1850s led to an influx of new migrants from China , North America and continental Europe, as well as outbreaks of bushranging and civil unrest; the latter peaked in 1854 when Ballarat miners launched the Eureka Rebellion against gold license fees. The 1860s saw

9976-502: The mountains of Southern Africa was about 6 °C colder than at present, in line with temperature drops estimated for Tasmania and southern Patagonia during the same time. This resulted in an environment of relatively arid periglaciation without permafrost , but with deep seasonal freezing on south-facing slopes. Periglaciation in the eastern Drakensberg and Lesotho Highlands produced solifluction deposits and blockfields ; including blockstreams and stone garlands. Scientists from

10092-602: The next two decades, social and economic reforms, together with the establishment of a Legislative Council and Supreme Court , saw the penal colony transition to a civil society. The indigenous population declined for 150 years following European settlement, mainly due to infectious disease. British colonial authorities did not sign any treaties with Aboriginal groups . As settlement expanded, tens of thousands of Indigenous people and thousands of settlers were killed in frontier conflicts while settlers dispossessed surviving Indigenous peoples of most of their land. In 1803,

10208-492: The political systems of the United Kingdom (a fused executive , constitutional monarchy and strong party discipline ) and the United States ( federalism , a written constitution and strong bicameralism with an elected upper house), resulting in a distinct hybrid. Federal government power is partially separated between three groups: Charles III reigns as King of Australia and is represented in Australia by

10324-745: The preceding Ipswichian stage and lying beneath those from the following Holocene , which is the current stage. This is sometimes called the Flandrian interglacial in Britain. The latter part of the Devensian includes pollen zones I–IV, the Allerød oscillation and Bølling oscillation , and the Oldest Dryas , Older Dryas , and Younger Dryas cold periods. Alternative names include Weichsel glaciation or Vistulian glaciation (referring to

10440-430: The proglacial rivers' shifting and redepositing gravels. Beneath the surface, they had profound and lasting influence on geothermal heat and the patterns of deep groundwater flow. The Pinedale (central Rocky Mountains) or Fraser (Cordilleran ice sheet) glaciation was the last of the major glaciations to appear in the Rocky Mountains in the United States. The Pinedale lasted from around 30,000 to 10,000 years ago, and

10556-594: The protection of threatened species. Numerous protected areas have been created under the National Strategy for the Conservation of Australia's Biological Diversity to protect and preserve unique ecosystems; 65 wetlands are listed under the Ramsar Convention , and 16 natural World Heritage Sites have been established. Australia was ranked 21st out of 178 countries in the world on

10672-480: The rate of 6 to 7 centimetres a year. The Australian mainland's continental crust , excluding the thinned margins, has an average thickness of 38   km, with a range in thickness from 24 km to 59 km. Australia's geology can be divided into several main sections, showcasing that the continent grew from west to east: the Archaean cratonic shields found mostly in the west, Proterozoic fold belts in

10788-529: The receding ice. When the enormous mass of the continental ice sheet retreated, the Great Lakes began gradually moving south due to isostatic rebound of the north shore. Niagara Falls is also a product of the glaciation, as is the course of the Ohio River, which largely supplanted the prior Teays River . With the assistance of several very broad glacial lakes, it released floods through the gorge of

10904-545: The remaining constitutional ties between Australia and the United Kingdom while maintaining the monarch in her independent capacity as Queen of Australia . In a 1999 constitutional referendum , 55% of voters rejected abolishing the monarchy and becoming a republic. Following the September 11 attacks on the United States, Australia joined the United States in fighting the Afghanistan War from 2001 to 2021 and

11020-419: The resources of their reefs and seas. Agriculture also developed on some islands and villages appeared by the 1300s. By the mid-18th century in northern Australia, contact, trade and cross-cultural engagement had been established between local Aboriginal groups and Makassan trepangers , visiting from present-day Indonesia. The Dutch are the first Europeans that recorded sighting and making landfall on

11136-491: The rise of blackbirding , where South Sea Islanders were coerced or abducted into indentured labour, mainly by Queensland colonists. From 1886, Australian colonial governments began removing many Aboriginal children from their families and communities, justified on the grounds of child protection and forced assimilation policies. The Second Boer War (1899–1902) marked the largest overseas deployment of Australia's colonial forces . On 1 January 1901, federation of

11252-399: The same fate. During the last glacial period, Antarctica was blanketed by a massive ice sheet, much as it is today. The ice covered all land areas and extended into the ocean onto the middle and outer continental shelf. Counterintuitively though, according to ice modeling done in 2002, ice over central East Antarctica was generally thinner than it is today. British geologists refer to

11368-549: The same name ), "the Sunburnt Country", and "the Wide Brown Land". The latter two both derive from Dorothea Mackellar 's 1908 poem " My Country ". Indigenous Australians comprise two broad groups: Human habitation of the Australian continent is estimated to have begun 50,000 to 65,000 years ago, with the migration of people by land bridges and short sea crossings from what is now Southeast Asia. It

11484-472: The sill about 8000 BP, forming a marine Littorina Sea , which was followed by another freshwater phase before the present brackish marine system was established. "At its present state of development, the marine life of the Baltic Sea is less than about 4000 years old", Drs. Thulin and Andrushaitis remarked when reviewing these sequences in 2003. Overlying ice had exerted pressure on the Earth's surface. As

11600-741: The spread of the SARS-CoV-2 virus . Surrounded by the Indian and Pacific oceans, Australia is separated from Asia by the Arafura and Timor seas, with the Coral Sea lying off the Queensland coast, and the Tasman Sea lying between Australia and New Zealand. The world's smallest continent and sixth-largest country by total area , Australia—owing to its size and isolation—is often dubbed

11716-480: The surrounding ice sheets. According to the sediment composition retrieved from deep-sea cores , even times of seasonally open waters must have occurred. Outside the main ice sheets, widespread glaciation occurred on the highest mountains of the Alpide belt . In contrast to the earlier glacial stages, the Würm glaciation was composed of smaller ice caps and mostly confined to valley glaciers, sending glacial lobes into

11832-614: The term Late Cenozoic Ice Age is used to include this early phase with the current glaciation. The previous ice age within the Quaternary is the Penultimate Glacial Period , which ended about 128,000 years ago, was more severe than the Last Glacial Period in some areas such as Britain, but less severe in others. The last glacial period saw alternating episodes of glacier advance and retreat with

11948-406: The thylacine. Many of Australia's ecoregions, and the species within those regions, are threatened by human activities and introduced animal, chromistan , fungal and plant species. All these factors have led to Australia's having the highest mammal extinction rate of any country in the world. The federal Environment Protection and Biodiversity Conservation Act 1999 is the legal framework for

12064-1029: The time of first European contact, Aboriginal Australians belonged to wide range of societies, with diverse economies spread across at least 250 different language groups . Estimates of the Aboriginal population before British settlement range from 300,000 to 3 million. Aboriginal Australians cultures were (and remain) deeply connected with the land and the environment, with stories of The Dreaming maintained through oral tradition , songs , dance and paintings. Certain groups engaged in fire-stick farming , fish farming , and built semi-permanent shelters . These practices have variously been characterised as " hunter-gatherer ", " agricultural ", "natural cultivation" and "intensification". Torres Strait Islander people first settled their islands at least 2,500 years ago. Culturally and linguistically distinct from mainland Aboriginal peoples, they were seafarers and obtained their livelihood from seasonal horticulture and

12180-625: The timespan of the Late Pleistocene . The LGP is part of a larger sequence of glacial and interglacial periods known as the Quaternary glaciation which started around 2,588,000 years ago and is ongoing. The glaciation and the current Quaternary Period both began with the formation of the Arctic ice cap . The Antarctic ice sheet began to form earlier, at about 34 Mya, in the mid- Cenozoic ( Eocene–Oligocene extinction event ), and

12296-447: The total glaciated area was in the Sierra Nevada de Mérida , and of that amount, the largest concentration, 50 km (19 sq mi), was in the areas of Pico Bolívar , Pico Humboldt [4,942 m (16,214 ft)], and Pico Bonpland [4,983 m (16,348 ft)]. Radiocarbon dating indicates that the moraines are older than 10,000 BP, and probably older than 13,000 BP. The lower moraine level probably corresponds to

12412-604: The western parts of Jutland were ice-free, and a large part of what is today the North Sea was dry land connecting Jutland with Britain (see Doggerland ). The Baltic Sea , with its unique brackish water , is a result of meltwater from the Weichsel glaciation combining with saltwater from the North Sea when the straits between Sweden and Denmark opened. Initially, when the ice began melting about 10,300 BP, seawater filled

12528-728: The whole western Swiss plateau, reaching today's regions of Solothurn and Aargau. In the region of Bern, it merged with the Aar glacier. The Rhine Glacier is currently the subject of the most detailed studies. Glaciers of the Reuss and the Limmat advanced sometimes as far as the Jura. Montane and piedmont glaciers formed the land by grinding away virtually all traces of the older Günz and Mindel glaciation, by depositing base moraines and terminal moraines of different retraction phases and loess deposits, and by

12644-531: Was "more agreeable to the ear, and an assimilation to the names of the other great portions of the Earth". The first time that Australia appears to have been officially used was in April 1817, when Governor Lachlan Macquarie acknowledged the receipt of Flinders' charts of Australia from Lord Bathurst . In December 1817, Macquarie recommended to the Colonial Office that it be formally adopted. In 1824,

12760-615: Was Australia's warmest recorded year, and the 2019–2020 bushfire season was the country's worst on record . Australia's greenhouse gas emissions per capita are among the highest in the world. Water restrictions are frequently in place in many regions and cities of Australia in response to chronic shortages due to urban population increases and localised drought. Throughout much of the continent, major flooding regularly follows extended periods of drought, flushing out inland river systems, overflowing dams and inundating large inland flood plains, as occurred throughout Eastern Australia in

12876-464: Was at its greatest extent between 23,500 and 21,000 years ago. This glaciation was somewhat distinct from the main Wisconsin glaciation, as it was only loosely related to the giant ice sheets and was instead composed of mountain glaciers, merging into the Cordilleran ice sheet. The Cordilleran ice sheet produced features such as glacial Lake Missoula , which broke free from its ice dam, causing

12992-413: Was established in 1829, evolving into the largest Australian colony by area, Western Australia . In accordance with population growth, separate colonies were carved from New South Wales: Tasmania in 1825, South Australia in 1836, New Zealand in 1841, Victoria in 1851, and Queensland in 1859. South Australia was founded as a free colony—it never accepted transported convicts. Growing opposition to

13108-602: Was introduced through colonization . As noted by scholar Thalia Anthony, the Australian settler colonial state has engaged in carceral tactics of containment and segregation against Aboriginal Australians since colonizers first arrived, "whether that be for Christian , civilizing , protectionist, welfare, or penal purposes." When settlers arrived, they invented courts and passed laws without consent of Indigenous peoples that stated that they had jurisdiction over them and their lands. When Indigenous peoples challenged these laws, they were imprisoned. In English law, imprisonment

13224-468: Was more widespread. An ice sheet formed in New Zealand, covering all of the Southern Alps, where at least three glacial advances can be distinguished. Local ice caps existed in the highest mountains of the island of New Guinea , where temperatures were 5 to 6 °C colder than at present. The main areas of Papua New Guinea where glaciers developed during the LGP were the Central Cordillera ,

13340-512: Was not covered by a continental-scale ice sheet. Instead, large, but restricted, icefield complexes covered mountain ranges within northeast Siberia, including the Kamchatka-Koryak Mountains. The Arctic Ocean between the huge ice sheets of America and Eurasia was not frozen throughout, but like today, probably was covered only by relatively shallow ice, subject to seasonal changes and riddled with icebergs calving from

13456-579: Was one of the founding members of the League of Nations in 1920, and the United Nations in 1945. The Statute of Westminster 1931 formally ended the ability of the UK to pass federal laws without Australia's consent. Australia adopted it in 1942, but it was backdated to 1939 to confirm the validity of legislation passed during World War II. The Australian Capital Territory was formed in 1911 as

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