The Australian mainland extends from west to east for nearly 2,500 miles (4,000 km) and from Cape York Peninsula in the northeast to Wilsons Promontory in the southeast for nearly 2,000 miles (3,200 km). To the south, Australian jurisdiction extends a further 310 miles (500 km) to the southern extremity of the island of Tasmania, and in the north it extends to the southern shores of Papua New Guinea. Australia is separated from Indonesia to the northwest by the Timor and Arafura seas, from Papua New Guinea to the northeast by the Coral Sea and the Torres Strait, from the Coral Sea Islands Territory by the Great Barrier Reef, from New Zealand to the southeast by the Tasman Sea, and from Antarctica in the far south by the Indian Ocean.
Australia has been called “the Oldest Continent,” “the Last of Lands,” and “the Last Frontier.” These descriptions typify the world’s fascination with Australia, but they are somewhat unsatisfactory. In simple physical terms the age of much of the continent is certainly impressive—most of the rocks providing the foundation of Australian landforms were formed during Precambrian and Paleozoic time (3.8 billion to 248 million years ago)—but the ages of the cores of all the continents are approximately the same.
On the other hand, whereas the landscape history of extensive areas in Europe and North America has been profoundly influenced by events and processes that occurred since late in the last Ice Age—roughly the past 25,000 years—in Australia scientists use a more extensive timescale that takes into account the great antiquity of the continent’s landscape. Australia is the last of lands only in the sense that it was the last continent, apart from Antarctica, to be explored by Europeans. At least 60,000 years before European explorers sailed into the South Pacific, the first Aboriginal explorers had arrived from Asia, and by 20,000 years ago they had spread throughout the mainland and its chief island outlier, Tasmania. When Captain Arthur Phillip of the British Royal Navy landed with the First Fleet at Botany Bay in 1788, there may have been between 250,000 and 500,000 Aboriginals, though some estimates are much higher. Largely nomadic hunters and gatherers, the Aboriginals had already transformed the primeval landscape, principally by the use of fire, and, contrary to common European perceptions, they had established robust, semipermanent settlements in well-favoured localities.
Australia’s isolation from other continents explains much of the singularity of its plant and animal life. Its unique flora and fauna include hundreds of kinds of eucalyptus trees and the only egg-laying mammals on Earth, the platypus and echidna. Other plants and animals associated with Australia are various acacias (Acacia pycnantha [golden wattle] is the national flower) and dingoes, kangaroos, koalas, and kookaburras. The Great Barrier Reef, off the east coast of Queensland, is the greatest mass of coral in the world and one of the world’s foremost tourist attractions. The country’s low relief results from the long and extensive erosive action of the forces of wind, rain, and the heat of the sun during the great periods of geologic time when the continental mass was elevated well above sea level.
Isolation is also a pronounced characteristic of much of the social landscape beyond the large coastal cities. But an equally significant feature of modern Australian society is the representation of a broad spectrum of cultures drawn from many lands, a development stemming from immigration that is transforming the strong Anglo-Celtic orientation of Australian culture. Assimilation, of course, is seldom a quick and easy process, and minority rights, multiculturalism, and race-related issues have played a large part in contemporary Australian politics. In the late 1990s these issues sparked a conservative backlash.
Unlike Britain, Australia has a federal form of government, with a central government and six constituent states (New South Wales, Victoria, Queensland, South Australia, Western Australia, and Tasmania). Each state has its own government, which exercises a limited degree of sovereignty. There are also two internal territories: Northern Territory, established as a self-governing territory in 1978, and the Australian Capital Territory (including the city of Canberra), which attained self-governing status in 1988. Major issues in resource development and environmental management have ignited controversies over the protection of states’ rights and the federal government’s gradual accumulation of power. The federal authorities also govern the external territories of Norfolk Island, the Cocos (Keeling) Islands, Christmas Island, Ashmore and Cartier islands, the Coral Sea Islands, and Heard and McDonald islands and claim the Australian Antarctic Territory, an area larger than Australia itself. Papua New Guinea, formerly an Australian external territory, gained its independence in 1975. "Australia" © Emmanuel BUCHOT, Encarta, Wikipedia
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