Australia |
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Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. It is the largest country by area in Oceania and the world's sixth-largest country. Australia's population of nearly 26 million, in an area of 7,617,930 square kilometres (2,941,300 sq mi), is highly urbanised and heavily concentrated on the eastern seaboard. Canberra is the nation's capital, while the largest city is Sydney, and other major metropolitan areas are Melbourne, Brisbane, Perth, and Adelaide. Indigenous Australians inhabited the continent for about 65,000 years, prior to the first arrival of Dutch explorers in the early 17th century, who named it New Holland. In 1770, Australia's eastern half was claimed by Great Britain and initially settled through penal transportation to the colony of New South Wales from 26 January 1788, a date which became Australia's national day. The population grew steadily in subsequent decades, and by the time of an 1850s gold rush, most of the continent had been explored by European settlers and an additional five self-governing crown colonies established. On 1 January 1901, the six colonies federated, forming the Commonwealth of Australia. Australia has since maintained a stable liberal democratic political system that functions as a federal parliamentary constitutional monarchy, comprising six states and ten territories. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a megadiverse country, and its size gives it a wide variety of landscapes and climates, with deserts in the centre, tropical rainforests in the north-east, and mountain ranges in the south-east. Australia generates its income from various sources, including mining-related exports, telecommunications, banking, manufacturing, and international education.Australia is a highly developed country, with the world's twelfth-largest economy. It has a high-income economy, with the world's tenth-highest per capita income. Australia is a regional power, and has the world's thirteenth-highest military expenditure. Immigrants account for 30% of the country's population, the highest proportion among major Western nations. Having the eighth-highest Human Development Index, and the ninth-highest ranked democracy globally as of 2020, Australia ranks highly in quality of life, health, education, economic freedom, civil liberties, and political rights, with all its major cities faring exceptionally in global comparative livability surveys. It is a member of the United Nations, the G20, the Commonwealth of Nations, the ANZUS, AUKUS, the OECD, the WTO, the APEC, the Pacific Islands Forum, the Pacific Community and the ASEAN + 6 mechanism.
Source: WikipediaAfrica |
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Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area and 20% of its land area. With 1.3 billion people as of 2018, it accounts for about 16% of the world's human population. Africa's population is the youngest amongst all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Despite a wide range of natural resources, Africa is the least wealthy continent per capita, in part due to geographic impediments, legacies of European colonization in Africa and the Cold War, predatory/neo-colonialistic activities by Western nations and China, and undemocratic rule and deleterious policies. Despite this low concentration of wealth, recent economic expansion and the large and young population make Africa an important economic market in the broader global context. The continent is surrounded by the Mediterranean Sea to the north, the Isthmus of Suez and the Red Sea to the northeast, the Indian Ocean to the southeast and the Atlantic Ocean to the west. The continent includes Madagascar and various archipelagos. It contains 54 fully recognised sovereign states (countries), eight territories and two de facto independent states with limited or no recognition. Algeria is Africa's largest country by area, and Nigeria is its largest by population. African nations cooperate through the establishment of the African Union, which is headquartered in Addis Ababa. Africa straddles the equator and the prime meridian making it the only continent in the world to be situated in all four cardinal hemispheres. It is the only continent to stretch from the northern temperate to southern temperate zones. The majority of the continent and its countries are in the Northern Hemisphere, with a substantial portion and number of countries in the Southern Hemisphere. Most of the continent lies in the tropics, except for a large part of Western Sahara, Algeria, Libya and Egypt, the northern tip of Mauritania, the entire territories of Morocco, Ceuta, Melilla and Tunisia which in turn are located above the tropic of Cancer, in the northern temperate zone. In the other extreme of the continent, southern Namibia, southern Botswana, great parts of South Africa, the entire territories of Lesotho and Eswatini and the southern tips of Mozambique and Madagascar are located below the tropic of Capricorn, in the southern temperate zone. Africa is home to much biodiversity; it is the continent with the largest number of megafauna species, as it was least affected by the extinction of the Pleistocene megafauna. However, Africa also is heavily affected by a wide range of environmental issues, including desertification, deforestation, water scarcity, and other issues. These entrenched environmental concerns are expected to worsen as climate change impacts Africa. The UN Intergovernmental Panel on Climate Change has identified Africa as the continent most vulnerable to climate change.The history of Africa is long, complex, and has often been under-appreciated by the global historical community. Africa, particularly Eastern Africa, is widely accepted as the place of origin of humans and the Hominidae clade (great apes). The earliest hominids and their ancestors have been dated to around 7 million years ago, including Sahelanthropus tchadensis, Australopithecus africanus, A. afarensis, Homo erectus, H. habilis and H. ergaster— the earliest Homo sapiens (modern human) remains, found in Ethiopia, South Africa, and Morocco, date to circa 200,000, 259,000, and 300,000 years ago respectively, and Homo sapiens is believed to have originated in Africa around 350,000–260,000 years ago.Early human civilizations, such as Ancient Egypt and Carthage emerged in North Africa. Following a subsequent long and complex history of civilizations, migration and trade, Africa hosts a large diversity of ethnicities, cultures and languages. The last 400 years have witnessed an increasing European influence on the continent. Starting in the 16th century, this was driven by trade, including the Trans-Atlantic slave trade, which created large African diaspora populations in the Americas. In the late 19th century, European countries colonized almost all of Africa, extracting resources from the continent and exploiting local communities; most present states in Africa emerged from a process of decolonisation in the 20th century.
Source: WikipediaSouth America is a continent entirely in the Western Hemisphere and mostly in the Southern...
Australia, officially the Commonwealth of Australia, is a sovereign country comprising the...
Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern...
Asia ( (listen)) is Earth's largest and most populous continent, located primarily in the Eastern...
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