This Day in History
Today: December 12, 2025
627
Battle of Nineveh: A Byzantine army under Emperor Heraclius defeats Emperor Khosrau II's Persian forces, commanded by General Rhahzadh.[1]
1388
Maria of Enghien sells the lordship of Argos and Nauplia to the Republic of Venice.[2]
1787
Pennsylvania becomes the second state to ratify the US Constitution.[3]
1862
American Civil War: USS Cairo sinks on the Yazoo River.[4]
1866
Oaks explosion: The worst mining disaster in England kills 361 miners and rescuers.[5]
1870
Joseph H. Rainey of South Carolina becomes the second black U.S. congressman.[6]
1901
Guglielmo Marconi receives the first transatlantic radio signal (the letter "S" [•••] in Morse Code), at Signal Hill in St John's, Newfoundland.[7]
1915
Yuan Shikai declares the establishment of the Empire of China and proclaims himself Emperor.[8]
1917
Father Edward J. Flanagan founds Boys Town as a farm village for wayward boys.[9]
1935
The Lebensborn Project, a Nazi reproduction program, is founded by Heinrich Himmler.[10]
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