| 1901 | Creation of the Commonwealth of Australia. This was a federation of the States of New South Wales, Victoria, Tasmania, Queensland, Western Australia and South Australia. 
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| 1911 | Site for capital at Canberra acquired. 
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| 1914 - 1918 | World War I - Anzac troops in Europe including Gallipoli. Australia experiences her first major losses in a war during in 1915 on the Gallipoli peninsula in Turkey. 
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| 1939 - 1945 | World War II - Anzac troops in Greece, Crete, and N Africa (El Alamein) and the Pacific. The Japanese bomb Darwin in 1942. 
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| 1941 | Curtin's appeal to USA for help in the World War marked the end of the special relationship with Britain. 
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| 1944 | Liberal party founded by Menzies. 
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| 1948 - 1975 | Two million new immigrants, the majority from continental Europe 
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| 1950 - 1953 | Korean War - Australian troops part of the United Nations forces. 
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| 1964 - 1972 | Vietnam War - Comonwealth troops in alliance with US forces. 
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| 1966 - 1974 | Mineral boom typified by the Posiedon nickel mine. 
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| 1967 | The ASEAN was established 
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| 1973 | Britain entered the Common Market, and in the 1970's Japan became Australia's chief trading partner. 
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| 1974 | Whitlam abolishes 'white Australia' policy. 
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| 1975 | Constitutional crisis; Prime Minister Whitlam dismissed by the governor general. 
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| 1975 | United Nations trust territory of Papua New Guinea became independent. 
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| 1975 | The Liberal Party under Malcolm Fraser comes to power. 
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| 1978 | Northern Territory achieved self-government. 
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| 1979 | Opening of uranium mines in Northern Territory. 
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| 1983 | Hawke convened first national economic summit - The Fraser Government is defeated in the election and the Australian Labour Party under Bob Hawke forms a government. 
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| 1988 | Australia celebrates its Bicentennial - 200 years since the first European settlement. 
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| 1991 | Paul Keating replaced Bob Hawke as Labour Party leader and Prime Minister. 
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| 1994 | The ASEAN Regional Forum (ARF) was established | 
| 1996 | Labour Party ousted in general election by Liberal-National Coalition. 
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| 1996 | John Howard replaced Paul Keating as Prime Minister. 
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| 1901 - 1999 | Australian Prime Ministers of the 20th Century 
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