April 25 events in history

775 The Battle of Bagrevand puts an end to an Armenian rebellion against the Abbasid Caliphate. Muslim control over Transcaucasia is solidified and its Islamization begins, while several major Armenian nakharar families lose power and their remnants flee to the Byzantine Empire
1134 The name Zagreb was mentioned for the first time in the Felician Charter relating to the establishment of the Zagreb Bishopric around 1094
1607 Eighty Years' War: The Dutch fleet destroys the anchored Spanish fleet at Gibraltar
1644 The Chongzhen Emperor, the last Emperor of Ming Dynasty China, commits suicide during a peasant rebellion led by Li Zicheng
1707 The Habsburg army is defeated by Bourbon army at Almansa (Spain) in the War of the Spanish Succession
1792 Highwayman Nicolas J. Pelletier becomes the first person executed by guillotine
1792 La Marseillaise (the French national anthem) is composed by Claude Joseph Rouget de Lisle
1804 The western Georgian kingdom of Imereti accepts the suzerainty of the Russian Empire
1829 Charles Fremantle arrives in HMS Challenger off the coast of modern-day Western Australia prior to declaring the Swan River Colony for the United Kingdom
1846 Thornton Affair: Open conflict begins over the disputed border of Texas, triggering the Mexican–American War
1847 The last survivors of the Donner Party are out of the wilderness
1849 The Governor General of Canada, Lord Elgin, signs the Rebellion Losses Bill, outraging Montreal's English population and triggering the Montreal Riots
1859 British and French engineers break ground for the Suez Canal
1862 American Civil War: Forces under Union Admiral David Farragut demand the surrender of the Confederate city of New Orleans, Louisiana
1864 American Civil War: The Battle of Marks' Mills
1882 Tonkin Campaign: French and Vietnamese troops clashed in Tonkin, when Commandant Henri Rivière seized the citadel of Hanoi with a small force of marine infantry
1898 Spanish–American War: The United States declares war on Spain
1901 New York becomes the first U.S. state to require automobile license plates. Anzac Beach – Australian and New Zealand forces invade Turkey
1915 World War I: The Battle of Gallipoli begins—The invasion of the Turkish Gallipoli Peninsula by Australian, British, French and New Zealand troops begins with landings at Anzac Cove and Cape Helles
1916 Easter Rebellion: The United Kingdom declares martial law in Ireland
1916 Anzac Day is commemorated for the first time on the first anniversary of the landing at Anzac Cove
1920 At the San Remo conference, the principal Allied Powers of World War I adopt a resolution to determine the allocation of Class "A" League of Nations mandates for administration of the former Ottoman-ruled lands of the Middle East
1938 U.S. Supreme Court delivers its opinion in Erie Railroad Co. v. Tompkins and overturns a century of federal common law
1943 The Demyansk Shield for German troops in commemoration of Demyansk Pocket is instituted
1944 The United Negro College Fund is incorporated
1945 Elbe Day: United States and Soviet troops meet in Torgau along the River Elbe, cutting the Wehrmacht of Nazi Germany in two, a milestone in the approaching end of World War II in Europe
1945 Liberation Day (Italy): The Nazi occupation army surrenders and leaves Northern Italy after a general partisan insurrection by the Italian resistance movement; the puppet fascist regime dissolves and Benito Mussolini is captured after trying to escape. This day was set as a public holiday to celebrate the Liberation of Italy
1945 Fifty nations gather in San Francisco, California to begin the United Nations Conference on International Organization
1945 The last German troops retreat from Finland's soil in Lapland, ending the Lapland War. Military acts of Second World War end in Finland
1951 Korean War: Assaulting Chinese forces are forced to withdraw after heavy fighting with UN forces, primarily made up of Australian and Canadian troops, at the Battle of Kapyong
1953 Francis Crick and James D. Watson publish "Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid" describing the double helix structure of DNA
1954 The first practical solar cell is publicly demonstrated by Bell Telephone Laboratories
1959 The St. Lawrence Seaway, linking the North American Great Lakes and the Atlantic Ocean, officially opens to shipping
1960 The U.S. Navy submarine USS Triton completes the first submerged circumnavigation of the globe
1961 Robert Noyce is granted a patent for an integrated circuit
1965 Teenage sniper Michael Andrew Clark kills three and wounds six others shooting from a hilltop along Highway 101 just south of Santa Maria, California
1966 The city of Tashkent is destroyed by a huge earthquake
1972 Vietnam War: Nguyen Hue Offensive – The North Vietnamese 320th Division forces 5,000 South Vietnamese troops to retreat and traps about 2,500 others northwest of Kontum
1974 Carnation Revolution: A leftist military coup in Portugal overthrows the fascist Estado Novo regime and establishes a democratic government
1975 As North Vietnamese forces close in on the South Vietnamese capital Saigon, the Australian Embassy is closed and evacuated, almost ten years to the day since the first Australian troop commitment to South Vietnam
1981 More than 100 workers are exposed to radiation during repairs of a nuclear power plant in Tsuruga, Japan
1982 Israel completes its withdrawal from the Sinai Peninsula per the Camp David Accords
1983 American schoolgirl Samantha Smith is invited to visit the Soviet Union by its leader Yuri Andropov after he read her letter in which she expressed fears about nuclear war
1983 Pioneer 10 travels beyond Pluto's orbit
1986 Mswati III is crowned King of Swaziland, succeeding his father Sobhuza II
1988 In Israel, John Demjanuk is sentenced to death for war crimes committed in World War II
1990 Violeta Chamorro takes office as the President of Nicaragua, the first woman to hold the position
2001 Michele Alboreto is killed while testing an Audi R8 at the Lausitzring in Germany
2005 The final piece of the Obelisk of Axum is returned to Ethiopia after being stolen by the invading Italian army in 1937
2005 Bulgaria and Romania sign accession treaties to join the European Union