Events

• 753 BC – Romulus founds Rome (traditional date).
• 43 BC – Battle of Mutina: Mark Antony is again defeated in battle by Aulus Hirtius, who is killed.
  • Antony fails to capture Mutina and Decimus Brutus is murdered shortly after.
• 900 – The Laguna Copperplate Inscription (the earliest known written document found in what is now the Philippines): the Commander-in-Chief of the Kingdom of Tondo, as represented by the Honourable Jayadewa, Lord Minister of Pailah, pardons from all debt the Honourable Namwaran and his relations.
• 1526 – The last ruler of the Lodi dynasty, Ibrahim Lodi is defeated and killed by Babur in the First Battle of Panipat.
• 1782 – The city of Rattanakosin, now known internationally as Bangkok, is founded on the eastern bank of the Chao Phraya River by King Buddha Yodfa Chulaloke.
• 1789 – John Adams sworn in as 1st US Vice President (nine days before George Washington).
• 1789 – George Washington’s reception at Trenton is hosted by the Ladies of Trenton as he journeys to New York City for his first inauguration.
• 1792 – Tiradentes, a revolutionary leading a movement for Brazil’s independence, is hanged, drawn and quartered.
• 1806 – Napoleonic Wars: Action of 21 April 1806: A French frigate escapes British forces off the coast of South Africa.
• 1809 – Napoleonic Wars: Two Austrian army corps are driven from Landshut by a First French Empire army led by Napoleon as two French corps to the north hold off the main Austrian army on the first day of the Battle of Eckmühl.
• 1836 – Texas Revolution: The Battle of San Jacinto: Republic of Texas forces under Sam Houston defeat troops under Mexican General Antonio López de Santa Anna.
• 1894 – Norway formally adopts the Krag-Jørgensen bolt-action rifle as the main arm of its armed forces, a weapon that would remain in service for almost 50 years.
• 1898 – Spanish-American War: The United States Navy begins a blockade of Cuban ports. When the US Congress issued a declaration of war on 25 April, it declared that a state of war had existed from this date.
• 1914 – World War I: Ypiranga incident: A German arms shipment to Mexico is intercepted by the US Navy near Veracruz.
• 1918 – World War I: German fighter ace Manfred von Richthofen, better known as “The Red Baron”, is shot down and killed over Vaux-sur-Somme in France.
• 1945 – World War II: Soviet forces south of Berlin at Zossen attack the German High Command headquarters.
• 1948 – United Nations Security Council Resolution 47 relating to Kashmir conflict is adopted.
• 1958 – United Airlines Flight 736 collides with a United States Air Force fighter jet near Arden, Nevada in what is now Enterprise, Nevada.
• 1960 – Brasília, Brazil’s capital, is officially inaugurated.
  • At 09:30, the Three Powers of the Republic are simultaneously transferred from the old capital, Rio de Janeiro.
• 1962 – The Seattle World’s Fair (Century 21 Exposition) opens.
  • It is the first World’s Fair in the United States since World War II.
  • 1965 – The 1964-1965 New York World’s Fair opens for its second and final season.
• 1967 – A few days before the general election in Greece, Colonel George Papadopoulos leads a coup d’état, establishing a military regime that lasts for seven years.
• 1975 – Vietnam War: President of South Vietnam Nguyễn Văn Thiệu flees Saigon, as Xuân Lộc, the last South Vietnamese outpost blocking a direct North Vietnamese assault on Saigon, falls.
• 1987 – The Tamil Tigers are blamed for a car bomb that detonates in the Sri Lankan capital city of Colombo, killing 106 people.
• 1993 – The Supreme Court in La Paz, Bolivia, sentences former dictator Luis García Meza to 30 years in jail without parole for murder, theft, fraud and violating the constitution.
• 2010 – The controversial Kharkiv Pact (Russian Ukrainian Naval Base for Gas Treaty) is signed in Kharkiv, Ukraine, by Ukrainian President Viktor Yanukovych and Russian President Dmitry Medvedev; it was unilaterally terminated by Russia on 31 March 2014.
• 2021 – Indonesian Navy submarine KRI Nanggala (402) sinks in the Bali Sea during a military drill, killing all 53 on board.
• Heroic Defense of Veracruz (Mexico).

People (Births)

• 1523 – Marco Antonio Bragadin, Venetian lawyer and military officer (d. 1571).
• 1713 – Louis de Noailles, French general (d. 1793).
• 1752 – Pierre-Alexandre-Laurent Forfait, French engineer, hydrographer, and politician, French Minister of Marine and the Colonies (d. 1807).
• 1790 – Manuel Blanco Encalada, Spanish-Chilean admiral and politician, 1st President of Chile (d. 1876).
• 1837 – Fredrik Bajer, Danish lieutenant and politician, Nobel Prize laureate (d. 1922).
• 1885 – Tatu Kolehmainen, Finnish runner (d. 1967).
• 1893 – Romeo Bertini, Italian runner (d. 1973).
• 1898 – Maurice Wilson, English soldier, pilot, and mountaineer (d. 1934).
• 1904 – Odilo Globocnik, Italian-Austrian SS officer (d. 1945).
• 1925 – Anthony Mason, Australian soldier and judge, 9th Chief Justice of Australia.
• 1925 – John Swinton of Kimmerghame, English general and politician, Lord Lieutenant of Berwickshire (d. 2018).
• 1948 – Dieter Fromm, German runner.
• 1988 – Ricky Berens, American swimmer.

People (Deaths)

• 1650 – Yagyū Jūbei Mitsuyoshi, Japanese samurai (b. 1607).
• 1720 – Antoine Hamilton, Irish-French soldier and author (b. 1646).
• 1815 – Joseph Winston, American soldier and politician (b. 1746).
• 1918 – Manfred von Richthofen, German captain and pilot (b. 1892).
• 1941 – Fritz Manteuffel, German gymnast (b. 1875).
• 1945 – Walter Model, German field marshal (b. 1891).