20th Century By Reeece Jan 1, 1901 Federation Of Australia Jan 22, 1901 Queen Victoria Dies After 63-year reign Dec 17, 1903 First Airplane Flies Jul 28, 1914 World War 1 Breaks Out Nov 11, 1918 World War 1 Ends Oct 9, 1929 Wall Street Crashes Sep 1, 1939 World War 2 Breaks Out Jun 26, 1945 United Nations, Replacing League Of Nations Sep 2, 1945 World War 2 Ends Nov 1, 1955 Vietnam War Nov 22, 1956 Melbourne Hosts Olympic Games Oct 14, 1962 Cuban Missle Crisis Brings World To Brink Of Nuclear War Feb 14, 1966 Australia Adopts Decimal Curreny May 27, 1967 Referundum Gives Citizenship Status To Aboriginal Australians Dec 17, 1967 Australian Prime Minister Harold Holt Drowns Feb 12, 1969 Australia Goes Metric Jul 16, 1969 Apollo 11 Lands on the Moon Dec 25, 1974 Cyclone Tracy Flattens Darwin Apr 30, 1975 Vietnam War Ends Jun 4, 1989 Tiananmen Square Massacre Nov 9, 1989 Berlin Wall Collapses Feb 11, 1990 Nelson Mandela Released From Prison Aug 2, 1990 US Launches Operation Desert Storm In Iraq Apr 28, 1996 Port Athur Massacre Aug 31, 1997 Princess Diana Dies In Car Crash Sep 11, 2001 Strikes On Twin Towers In New York