Main events of the Twentieth Century By jiazhenwang Jan 1, 1901 Federation of Australian Period: Jan 1, 1914 to Nov 11, 1918 WWI Period: 1922 to 1991 Soviet Union Period: 1929 to 1939 Great Depression Period: Sep 1, 1939 to Sep 2, 1945 WWII Dec 22, 1941 Attack on Pearl Harbour 1949 Proclamation of People's Republic of China Period: 1954 to 1968 Civil Rights Movement Period: 1957 to 1975 Space Race 1958 Mao Zedong launches 'great leap forward' 1966 China's 'Cultural Evolution' 1989 Fall of Berlin Wall