20th-century events By Katsia 1902 Philippine–American War ends. 1903 The teddy bear is invented 1910 Boy Scouts of America is founded. Period: 1914 to 1918 World War I 1917 October Revolution 1922 Benito Mussolini came to power Period: 1929 to 1939 The Great Depression 1933 Adolf Hitler came to power Period: 1939 to 1945 World War II 1945 United Nations founded 1947 Harry Truman establishes the Truman Doctrine Period: 1947 to 1991 The Cold War 1949 Creation of NATO. 1958 Creation of NASA 1962 Cuban Missile Crisis 1967 Summer of Love. 1968 My Lai massacre. 1970 Break-up of the Beatles. 1973 1973 oil crisis 1978 Birth of the first test-tube baby. 1981 Launch of MTV 1984 Assassination of Indira Gandhi. 1988 Perestroika begins. 1990 Gulf War begins 1996 Murder of Tupac Shakur. 1999 Euro is introduced to the financial markets.
