1927 â Leon Trotsky is expelled from the Soviet Communist Party, leaving Joseph Stalin in undisputed control of the Soviet Union.
1933 â Nazi Germany uses a referendum to ratify its withdrawal from the League of Nations.
1938 â Nazi Germany issues the Decree on the Elimination of Jews from Economic Life prohibiting Jews from selling goods and services or working in a trade, totally segregating Jews from the German economy.
1970 â The Oregon Highway Division attempts to destroy a rotting beached sperm whale with explosives, leading to the now infamous "exploding whale" incident.
1990 â Tim Berners-Lee publishes a formal proposal for the World Wide Web.
1927 â Leon Trotsky is expelled from the Soviet Communist Party, leaving Joseph Stalin in undisputed control of the Soviet Union.
1933 â Nazi Germany uses a referendum to ratify its withdrawal from the League of Nations.
1938 â Nazi Germany issues the Decree on the Elimination of Jews from Economic Life prohibiting Jews from selling goods and services or working in a trade, totally segregating Jews from the German economy.
1970 â The Oregon Highway Division attempts to destroy a rotting beached sperm whale with explosives, leading to the now infamous "exploding whale" incident.
1990 â Tim Berners-Lee publishes a formal proposal for the World Wide Web.
1898 â White supremacists seized power and massacred black Americans during the Wilmington massacre, the only instance of a municipal government being overthrown in United States history.
1898 â White supremacists seized power and massacred black Americans during the Wilmington massacre, the only instance of a municipal government being overthrown in United States history.
1951 â With the rollout of the North American Numbering Plan, direct-dial coast-to-coast telephone service begins in the United States.
1969 â National Educational Television (the predecessor to the Public Broadcasting Service) in the United States debuts Sesame Street.
1975 â The 729-foot-long freighter SS Edmund Fitzgerald sinks during a storm on Lake Superior, killing all 29 crew on board.
1975 â Israeli-Palestinian conflict: the United Nations General Assembly passes Resolution 3379, determining that Zionism is a form of racism.
1983 â Bill Gates introduces Windows 1.0.
1989 â Germans begin to tear down the Berlin Wall.
1921 â The National Fascist Party (Partito Nazionale Fascista or PNF) is founded in Italy.
1923 â In Munich, police and government troops crush the Nazi Beer Hall Putsch.
1935 â The Committee for Industrial Organization, the precursor to the Congress of Industrial Organizations, is founded in Atlantic City, New Jersey, by eight trade unions belonging to the American Federation of Labor.
1938 â Kristallnacht occurs, instigated by the Nazis using the killing of German diplomat Ernst vom Rath by Herschel Grynszpan as justification.
1979 â Cold War: Nuclear false alarm: The NORAD computers and the Alternate National Military Command Center in Fort Ritchie, Maryland, detect a purported massive Soviet nuclear strike. After reviewing the raw data from satellites and checking the early-warning radars, the alert is cancelled.
2004 â Firefox 1.0 is released.
2023 â U.S. surgeons at NYU Langone Health announce the world's first whole eye transplant.
1895 â While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
1923 â Beer Hall Putsch: In Munich, Adolf Hitler leads the Nazis in an unsuccessful attempt to overthrow the German government.
1933 â Great Depression: New Deal: US President Franklin D. Roosevelt unveils the Civil Works Administration, an organization designed to create jobs for more than four million unemployed.
1937 â The Nazi exhibition Der ewige Jude ("The Eternal Jew") opens in Munich.
1957 â Operation Grapple X, Round C1: The United Kingdom conducts its first successful hydrogen bomb test over Kiritimati in the Pacific.
1966 â Former Massachusetts Attorney General Edward Brooke becomes the first African American elected to the United States Senate since Reconstruction.
1972 â American pay television network Home Box Office (HBO) launches.
1994 â Republican Revolution: On the night of the 1994 United States midterm elections, Republicans make historic electoral gains by securing massive majorities in both houses of Congress (54 seats in the House and eight seats in the Senate, additionally), thus bringing to a close four decades of Democratic domination.
2011 â The potentially hazardous asteroid 2005 YU55 passes 0.85 lunar distances from Earth (about 324,600 kilometres or 201,700 miles), the closest known approach by an asteroid of its brightness since 2010 XC15 in 1976.
2016 â Donald Trump is elected the 45th President of the United States, defeating Hillary Clinton, the first woman ever to receive a major party's nomination.
1916 â Jeannette Rankin is the first woman elected to the United States Congress.
1917 â The October Revolution, which gets its name from the Julian calendar date of 25 October, occurs, according to the Gregorian calendar; on this date, the Bolsheviks storm the Winter Palace.
1944 â Franklin D. Roosevelt is elected for a record fourth term as President of the United States.
1967 â Carl B. Stokes is elected as Mayor of Cleveland, Ohio, becoming the first African American mayor of a major American city.
1967 â US President Lyndon B. Johnson signs the Public Broadcasting Act of 1967, establishing the Corporation for Public Broadcasting.
1973 â The United States Congress overrides President Richard Nixon's veto of the War Powers Resolution, which limits presidential power to wage war without congressional approval.
1983 â Cold War: The command post exercise Able Archer 83 begins, eventually leading to the Soviet Union to place air units in East Germany and Poland on alert, for fear that NATO was preparing for war.
1989 â Douglas Wilder wins the governor's seat in Virginia, becoming the first elected African American governor in the United States.
1989 â David Dinkins becomes the first African American to be elected Mayor of New York City.
1990 â Mary Robinson becomes the first woman to be elected President of the Republic of Ireland.
1994 â WXYC, the student radio station of the University of North Carolina at Chapel Hill, launches the world's first internet radio broadcast.
1996 â NASA launches the Mars Global Surveyor.
2000 â The controversial US presidential election is later resolved in the Bush v. Gore Supreme Court case, electing George W. Bush as the 43rd President of the United States.
2020 â Joe Biden is confirmed elected as the 46th president of the United States, defeating incumbent Donald Trump.
1860 â Abraham Lincoln is elected the 16th president of the United States with only 40% of the popular vote, defeating John C. Breckinridge, John Bell, and Stephen A. Douglas in a four-way race.
1947 â Meet the Press, the longest running television program in history, makes its debut on NBC Television.
1971 â The United States Atomic Energy Commission tests the largest U.S. underground hydrogen bomb, code-named Cannikin, on Amchitka Island in the Aleutians.
2012 â Tammy Baldwin becomes the first openly gay politician to be elected to the United States Senate.
1872 â Women's suffrage in the United States: In defiance of the law, suffragist Susan B. Anthony votes for the first time, and is later fined $100.
1940 â Franklin D. Roosevelt is the first and only President of the United States to be elected to a third term.
2024 â Donald Trump becomes the first president of the United States to be elected to a non-consecutive second term in 132 years, since Grover Cleveland won the 1892 election.
1737 â The Teatro di San Carlo, the oldest working opera house in Europe, is inaugurated in Naples, Italy.
1847 â Sir James Young Simpson, a Scottish medical doctor, discovers the anaesthetic properties of chloroform.
1922 â In Egypt, British archaeologist Howard Carter and his men find the entrance to Tutankhamun's tomb in the Valley of the Kings.
1924 â Nellie Tayloe Ross of Wyoming becomes the first female elected as governor in the United States.
1952 â The United States government establishes the National Security Agency, or NSA.
1960 â At the Kasakela Chimpanzee Community in Tanzania, Jane Goodall observes chimpanzees creating tools, the first-ever observation in non-human animals.
1962 â The United States concludes Operation Fishbowl, its final above-ground nuclear weapons testing series, in anticipation of the 1963 Partial Nuclear Test Ban Treaty.
1980 â Ronald Reagan is elected as the 40th President of the United States, defeating incumbent Jimmy Carter.
2008 â Barack Obama becomes the first person of biracial or African-American descent to be elected as President of the United States.
1868 â John Willis Menard (R-LA) becomes the first African American elected to the United States Congress. Because of an electoral challenge, he is never seated.
1979 â Greensboro massacre: Five members of the Communist Workers Party are shot dead and seven are wounded by a group of Klansmen and neo-Nazis during a "Death to the Klan" rally in Greensboro, North Carolina, United States.
1986 â IranâContra affair: The Lebanese magazine Ash-Shiraa reports that the United States has been secretly selling weapons to Iran in order to secure the release of seven American hostages held by pro-Iranian groups in Lebanon.
1917 â The Balfour Declaration proclaims British support for the "establishment in Palestine of a national home for the Jewish people" with the clear understanding "that nothing shall be done which may prejudice the civil and religious rights of existing non-Jewish communities".
1920 â In the United States, KDKA of Pittsburgh starts broadcasting as the first commercial radio station. The first broadcast is the result of the 1920 United States presidential election.
1936 â The BBC Television Service, the world's first regular, "high-definition" (then defined as at least 200 lines) service begins. Renamed BBC1 in 1964, the channel still runs to this day.
1960 â Penguin Books is found not guilty of obscenity in the trial R v Penguin Books Ltd, the Lady Chatterley's Lover case.
1983 â U.S. President Ronald Reagan signs a bill creating Martin Luther King Jr. Day.
1988 â The Morris worm, the first Internet-distributed computer worm to gain significant mainstream media attention, is launched from MIT.
2016 â The Chicago Cubs defeat the Cleveland Indians in the World Series, ending the longest Major League Baseball championship drought at 108 years.
1512 â The ceiling of the Sistine Chapel, painted by Michelangelo, is exhibited to the public for the first time.
1800 â John Adams becomes the first President of the United States to live in the Executive Mansion (later renamed the White House).
1848 â In Boston, Massachusetts, the first medical school for women, Boston Female Medical School (which later merged with the Boston University School of Medicine), opens.
1870 â In the United States, the Weather Bureau (later renamed the National Weather Service) makes its first official meteorological forecast.
1897 â The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
1941 â American photographer Ansel Adams takes a picture of a moonrise over the town of Hernandez, New Mexico that would become one of the most famous images in the history of photography.
1951 â Operation BusterâJangle: Six thousand five hundred United States Army soldiers are exposed to 'Desert Rock' atomic explosions for training purposes in Nevada. Participation is not voluntary.
1952 â Nuclear weapons testing: The United States successfully detonates Ivy Mike, the first thermonuclear device, at the Eniwetok atoll. The explosion had a yield of ten megatons TNT equivalent.
1963 â The Arecibo Observatory in Arecibo, Puerto Rico, with the largest radio telescope ever constructed, officially opens.
1993 â The Maastricht Treaty takes effect, formally establishing the European Union.
1938 â Orson Welles broadcasts a radio adaptation of H. G. Wells's The War of the Worlds, causing a massive panic in some of the audience in the United States.
1944 â Holocaust: Anne and Margot Frank are deported from Auschwitz to the Bergen-Belsen concentration camp, where they die from disease the following year, shortly before the end of WWII.
1961 â The Soviet Union detonates the Tsar Bomba, the most powerful explosive device ever detonated.
1929 â Black Tuesday: The New York Stock Exchange crashes, ending the Great Bull Market of the 1920s and eventually contributing to the Great Depression.
1969 â The first-ever computer-to-computer link is established on ARPANET, the precursor to the Internet.
2015 â China announces the end of its one-child policy after 35 years.