[["Fall of the Berlin Wall","1989"],["Signing of the Declaration of Independence","1776"],["Start of World War I","1914"],["Moon Landing","1969"],["French Revolution Begins","1789"],["End of World War II","1945"],["September 11 Attacks","2001"],["Nelson Mandela Released from Prison","1990"],["Chernobyl Disaster","1986"],["First Man in Space","1961"],["Assassination of John F. Kennedy","1963"],["Women’s Suffrage in the U.S.","1920"],["Martin Luther King Jr.'s 'I Have a Dream' Speech","1963"],["Pearl Harbor Attack","1941"],["Fall of the Roman Empire (Western)","476"],["Gutenberg's Printing Press Invented","1440"],["Start of the American Civil War","1861"],["Formation of the United Nations","1945"],["Discovery of Penicillin","1928"],["Nelson Mandela Elected President","1994"]]