20th century timeline By A. Bothma Feb 7, 1894 port arthur massacre Feb 6, 1901 federation of australia Feb 7, 1901 queen victoria dies Feb 6, 1903 first airplane flies Jun 28, 1914 world war 1 breaks out Feb 5, 1918 world war 1 ends Feb 7, 1929 wall street crash triggers great depression Feb 6, 1939 world war 2 Feb 7, 1939 United nations forms, replacing league of nations Feb 6, 1945 world war 2 ends Feb 7, 1956 Melbourne hosts olympic games Feb 6, 1962 vietnam war Feb 7, 1962 Cuban Missile Crisis Brings world to brink of nuclear war Feb 7, 1967 Harold Holt drowns Feb 5, 1969 Apollo 11 lands on the moon Feb 7, 1970 Australia goes metric Feb 7, 1974 Australia adopts decimal currency Feb 7, 1974 cyclone tracy flattens darwin Feb 7, 1989 Tiananmen Square Massacre Feb 7, 1989 Berlin wall collapses Feb 7, 1990 Nelson Mandela Released from prison Feb 7, 1990 Operation Desert storm launched Feb 7, 1997 princess diana dies in car crash Feb 7, 2001 Strikes on twin towers Feb 7, 2012 Aboriginal Australians given citizenship status