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Our on this day in history archives contain over 200,000 events, birthdays and deaths from 6,000 years of history. Here is a roundup of a few more of them:

April 25 is the 115th day of the year (116th in leap years) in the Gregorian calendar; 250 days remain until the end of the year.

EVENTS

799 – After mistreatment and disfigurement by the citizens of Rome, Pope Leo III flees to the Frankish court of king Charlemagne at Paderborn for protection.

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.

1829 – Charles Fremantle arrives in HMS Challenger off the coast of modern-day Western Australia prior to declaring the Swan River Colony for the British Empire.

1859 – British and French engineers break ground for the Suez Canal.

1862 – American Civil War: Forces under U.S. Admiral David Farragut demand the surrender of the Confederate city of New Orleans, Louisiana.

1864 – American Civil War: In the Battle of Marks' Mills, a force of 8,000 Confederate soldiers attacks 1,800 Union soldiers and a large number of wagon teamsters, killing or wounding 1,500 Union combatants.

1898 – Spanish–American War: The United States Congress declares that a state of war between the U.S. and Spain has existed since April 21, when an American naval blockade of the Spanish colony of Cuba began.

1901 – New York becomes the first U.S. state to require automobile license plates.

1944 – The United Negro College Fund is incorporated.

1953 – Francis Crick and James 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 Saint Lawrence Seaway, linking the North American Great Lakes and the Atlantic Ocean, officially opens to shipping.

1960 – The United States Navy submarine USS Triton completes the first submerged circumnavigation of the globe.

1961 – Robert Noyce is granted a patent for an integrated circuit.

1983 – Pioneer 10 travels beyond Pluto's orbit.

2001 – President George W. Bush pledges U.S. military support in the event of a Chinese attack on Taiwan.

2004 – The March for Women's Lives brings between 500,000 and 800,000 protesters, mostly pro-choice, to Washington D.C. to protest the Partial-Birth Abortion Ban Act of 2003, and other restrictions on abortion.

2007 – Boris Yeltsin's funeral: The first to be sanctioned by the Russian Orthodox Church for a head of state since the funeral of Emperor Alexander III in 1894.

2014 – The Flint water crisis begins when officials at Flint, Michigan switch the city's water supply to the Flint River, leading to lead and bacteria contamination.

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