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Leonardo de Pisa, matemático de la República de Pisa (n. 1170), conocido como Fibonacci, la mayoría de las referencias indican su fallecimiento en 1240, no obstante haber sido declarado el más importante matemático de la Edad Media y como responsable de expandir al mundo la numeración indo arábiga y las series de Fibonacci. [.
- Años 1240
Fernando III, «el Santo», reconquista la ciudad de Cabra...
- Años 1240
May 24 – Duke Skule Bårdsson, claimant to the Norwegian throne, is defeated by King Haakon IV ( the Old) and his supporters. He seeks refuge in Elgeseter Priory in Trondheim, and Haakon burns down the monastery, in which Skule is burned alive. Haakon becomes the undisputed ruler; this ends the civil war era in Norway, after 110 years.
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Between 1951 and 1963, the frequency was also one of two used for the United States' CONELRAD emergency broadcasting system, the other frequency being 640 AM.
The siege of Kiev by the Mongols took place between 28 November and 6 December 1240, and resulted in a Mongol victory. It was a heavy morale and military blow to the Principality of Galicia–Volhynia , which was forced to submit to Mongol suzerainty, and allowed Batu Khan to proceed westward into Central Europe.
April 9 – Battle of Legnica: The Mongols, under the command of Baidar, Kadan and Orda Khan, defeat the feudal Polish nobility, including the Knights Templar. [9] [10] April 11 – Battle of Mohi: Batu Khan and Subutai defeat Béla IV of Hungary. The battle is the last major event in the Mongol Invasion of Europe.
Arte —preferentemente acabado— en la década de los años 1240, entendido en sentido amplio como todo tipo de manifestación artística, sean obras de arquitectura, danza, escultura, música, literatura, pintura, cine, teatro... , así como eventos relacionados con el arte, como exposiciones, publicaciones... Categorías: Arte por década.
