Modern History
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The Tsakonian Commemoration of Vaskina is registered at the National List of Intangible Cultural Heritage
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The Tsakonian Dance is registered at the National List of Intangible Cultural Heritage
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''The 100 day road'' of Kosmas
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The battle of Leonidion. During the Civil War, the National Army fought against the guerillas of Hellenic People's Liberation Army
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Second World War, 11 people executed in Leonidion, during the last raid of the German army
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Second World War, the German army burns Kosmas to the ground
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Second World War, battle of Kosmas