0475 BC – Roman consulPublius Valerius Poplicola celebrates a Roman triumph for his victory over Veii and the Sabines.
0305 – Diocletian and Maximian retire from the office of Roman emperor.
0524 – King Sigismund of Burgundy is executed at Orléans after an eight-year reign and is succeeded by his brother Godomar.
0880 – The Nea Ekklesia is inaugurated in Constantinople, setting the model for all later cross-in-square Orthodox churches.
1169 – Norman mercenaries land at Bannow Bay in Leinster, marking the beginning of the Norman invasion of Ireland.
1328 – Wars of Scottish Independence end: By the Treaty of Edinburgh–Northampton, England recognises Scotland as an independent state.
1455 – Battle of Arkinholm, Royal forces end the Black Douglas hegemony in Scotland.
1576 – Stephen Báthory, the reigning Prince of Transylvania, marries Anna Jagiellon and they become co-rulers of the Polish–Lithuanian Commonwealth.
1707 – The Act of Union joining England and Scotland to form the Kingdom of Great Britain takes effect.
1753 – Publication of Species Plantarum by Linnaeus, and the formal start date of plant taxonomy adopted by the International Code of Botanical Nomenclature.
1759 – Josiah Wedgwood founds the Wedgwood pottery company in Great Britain.[1]
1776 – Establishment of the Illuminati in Ingolstadt, Upper Bavaria, by Jesuit-taught Adam Weishaupt.
1778 – American Revolution: The Battle of Crooked Billet begins in Hatboro, Pennsylvania.
1786 – In Vienna, Austria, Mozart's opera The Marriage of Figaro is performed for the first time.[2]
1794 – War of the Pyrenees: The Battle of Boulou ends, in which French forces defeat the Spanish and regain nearly all the land they lost to Spain in 1793.
1820 – Execution of the Cato Street Conspirators, who plotted to kill the BritishCabinet and Prime MinisterLord Liverpool.[3]
1840 – The Penny Black, the first official adhesive postage stamp, is issued in the United Kingdom.
1844 – Hong Kong Police Force, the world's second modern police force and Asia's first, is established.
1846 – The few remaining Mormons left in Nauvoo, Illinois, formally dedicate the Nauvoo Temple.
1851 – Queen Victoria opens The Great Exhibition at The Crystal Palace in London.
1856 – The Province of Isabela was created in the Philippines in honor of Queen Isabela II.
1862 – American Civil War: The Union Army completes its capture of New Orleans.
1863 – American Civil War: The Battle of Chancellorsville begins.[4]
1865 – The Empire of Brazil, Argentina, and Uruguay sign the Treaty of the Triple Alliance.
1866 – The Memphis Race Riots begin. In three days time, 46 blacks and two whites were killed. Reports of the atrocities influenced passage of the Fourteenth Amendment to the United States Constitution.[5]
1875 – Alexandra Palace reopens after being burned down in a fire in 1873.
1884 – The Federation of Organized Trades and Labor Unions demands the eight-hour work day in the United States.[6]
1884 – Moses Fleetwood Walker becomes the first black person to play in a professional baseball game in the United States.
1885 – The original Chicago Board of Trade Building opens for business.
1886 – Rallies are held throughout the United States demanding the eight-hour work day, culminating in the Haymarket affair in Chicago, in commemoration of which May 1 is celebrated as International Workers' Day in many countries.
1893 – The World's Columbian Exposition opens in Chicago.[7]
1894 – Coxey's Army, the first significant American protest march, arrives in Washington, D.C.[8]
1898 – Spanish–American War: Battle of Manila Bay: The Asiatic Squadron of the United States Navy destroys the Pacific Squadron of the Spanish Navy after a seven-hour battle. Spain loses all seven of its ships, and 381 Spanish sailors die. There are no American vessel losses or combat deaths.[9]
1900 – The Scofield Mine disaster kills over 200 men in Scofield, Utah in what is to date the fifth-worst mining accident in United States history.
1915 – The Template:RMS departs from New York City on her 202nd, and final, crossing of the North Atlantic. Six days later, the ship is torpedoed off the coast of Ireland with the loss of 1,198 lives.
1919 – German troops enter Munich to suppress the Bavarian Soviet Republic.
1925 – The All-China Federation of Trade Unions is officially founded. Today it is the largest trade union in the world, with 134 million members.
1927 – The Union Labor Life Insurance Company is founded by the American Federation of Labor.[10]
1929 – The 7.2 Template:MKopet Dag earthquake shakes the Iran–Turkmenistan border region with a maximum Mercalli intensity of IX (Violent), killing up to 3,800 and injuring 1,121.
1930 – "Pluto" is officially proposed for the name of the newly-discovered dwarf planetPluto by Vesto Slipher in the Lowell Observatory Observation Circular. The name quickly catches on.[11]
1931 – The Empire State Building is dedicated in New York City.
1941 – World War II: German forces launch a major attack during the siege of Tobruk.
1944 – World War II: Two hundred Communist prisoners are shot by the Germans at Kaisariani, Athens in reprisal for the killing of General Franz Krech by partisans at Molaoi.
1945 – World War II: A German newsreader officially announces that Adolf Hitler has "fallen at his command post in the Reich Chancellery fighting to the last breath against Bolshevism and for Germany". The Soviet flag is raised over the Reich Chancellery, by order of Stalin.
1945 – World War II: Nazi propaganda ministerJoseph Goebbels and his wife Magda commit suicide in the Reich Garden outside the Führerbunker. Their children are also killed by having cyanide pills inserted into their mouths by their mother, Magda.
1945 – World War II: Forces of the Soviet Red Army liberate Allied prisoners of war imprisoned at Stalag Luft I near Barth, Germany.
1945 – World War II: Up to 2,500 people die in a mass suicide in Demmin following the advance of the Red Army.
1945 – World War II: Yugoslav Partisans liberate Trieste.
1946 – Start of three-year Pilbara strike of Indigenous Australians.
1946 – The Paris Peace Conference concludes that the islands of the Dodecanese should be returned to Greece by Italy.
1947 – Portella della Ginestra massacre against May Day celebrations in Sicily by the bandit and separatist leader Salvatore Giuliano where 11 persons are killed and 33 wounded.
1956 – The polio vaccine developed by Jonas Salk is made available to the public.
1956 – A doctor in Japan reports an "epidemic of an unknown disease of the central nervous system", marking the official discovery of Minamata disease.
1957 – Thirty-four people are killed when a Vickers Viking airliner crashes in Hampshire, England.
1960 – Formation of the western Indian states of Gujarat and Maharashtra; also known as "Maharashtra Day".
1960 – Cold War: U-2 incident: Francis Gary Powers, in a Lockheed U-2spyplane, is shot down over the Sverdlovsk Oblast, Soviet Union, sparking a diplomatic crisis.
1970 – Vietnam War: Protests erupt following the announcement by Richard Nixon that the U.S. and South Vietnamese forces would attack Vietnamese communists in a Cambodian Campaign.
1971 – Amtrak (the National Railroad Passenger Corporation) takes over operation of U.S. passenger rail service.[12]
1974 – The Argentine terrorist organization Montoneros is expelled from Plaza de Mayo by president Juan Perón.
1977 – Thirty-six people are killed in Taksim Square, Istanbul, during the Labour Day celebrations.
1978 – Japan's Naomi Uemura, travelling by dog sled, becomes the first person to reach the North Pole alone.
1982 – Operation Black Buck: The Royal Air Force attacks the Argentine Air Force during Falklands War.
1990 – The former Philippine Episcopal Church (supervised by the Episcopal Church of the United States of America) is granted full autonomy and raised to the status of an Autocephalous Anglican Province and renamed the Episcopal Church in the Philippines.
1993 – Dingiri Banda Wijetunga became president of Sri Lanka automatically after killing of R Premadasa in LTTE bomb explosion.
1994 – Three-time Formula One world champion Ayrton Sennais killed in an accident whilst leading the San Marino Grand Prix at Imola.
1995 – Croatian War of Independence: Croatian forces launch Operation Flash.
1999 – The body of British climber George Mallory is found on Mount Everest, 75 years after his disappearance in 1924.[13]
2001 – Philippine PresidentGloria Macapagal Arroyo declares the existence of "a state of rebellion", hours after thousands of supporters of her arrested predecessor, Joseph Estrada, storm towards the presidential palace at the height of the EDSA III rebellion.
2002 – OpenOffice.org released version 1.0, the first stable version of the software.
2003 – Invasion of Iraq: In what becomes known as the "Mission Accomplished" speech, on board the USS Abraham Lincoln (off the coast of California), U.S. President George W. Bush declares that "major combat operations in Iraq have ended".
2011 – Pope John Paul II is beatified by his successor, Pope Benedict XVI.
2019 – Naxalite attack in Gadchiroli district of India: Sixteen army soldiers, including a driver, killed in an IED blast. Naxals targeted an anti-Naxal operations team.[15]
2015 – Vafa Guluzade, Azerbaijani political scientist, academic, and diplomat (b. 1940)
2015 – María Elena Velasco, Mexican actress, singer, director, and screenwriter (b. 1940)
2015 – Grace Lee Whitney, American actress (b. 1930)
Holidays and observances[]
Christian feast day:
Andeolus
Augustin Schoeffler, Jean-Louis Bonnard (part of Vietnamese Martyrs)
Benedict of Szkalka
Brioc
James the Less (Anglican Communion)
Joseph the Worker (Roman Catholic)
Blessed Klymentiy Sheptytsky (Ukrainian Greek Catholic Church
Marcouf
Philip the Apostle (Anglican Communion, Lutheran Church)
Richard Pampuri
Sigismund of Burgundy
Ultan
May 1 (Eastern Orthodox liturgics)
Earliest day on which Mother's Day can fall, while May 7 is the latest; celebrated on the first Monday in May. (Samoa)
Earliest day on which Mother's Day can fall, while May 7 is the latest; celebrated on the first Sunday in May. (Hong Kong, Hungary, Lithuania, Mozambique, Portugal, Spain, Romania)
Earliest day on which National Day of Prayer can fall, while May 7 is the latest; celebrated on the first Thursday in May. (United States)
Earliest day on which World Asthma Day can fall, while May 7 is the latest; celebrated on the first Tuesday in May. (International)
↑Marter, Joan M. (2001). The Grove Encyclopedia of American Art. New York: Oxford University Press. p. 229. ISBN978-0-1953-3579-8.
↑O'Reilly, Angela (2010). Encyclopedia of Motherhood. 1. Los Angeles: Sage. p. 602. ISBN978-1-4129-6846-1.
↑Mori, Sylvia. "Clelia Lollini". enciclopedia delle donne (in Italian). Retrieved 2020-01-26.
↑"Fisher". The Pennsylvania State University. Retrieved 10 July 2019.
↑Murphy, Lynne (1996). "Hollinworth, May (1895–1968)". Australian Dictionary of Biography, Volume 14. National Centre of Biography, Australian National University. ISBN0522842364. Retrieved 22 May 2019.