Concept
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Splitting History
Petrarch by Andrea del Castagno.
Petrarch, Italian poet and thinker, conceived of the idea of a European "Dark Age," which later evolved into the tripartite periodization of Western history into Ancient, Middle Ages and Modern.
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"Petrarch_by_Bargilla.jpg."
https://en.wikipedia.org/wiki/Periodization#/media/File:Petrarch_by_Bargilla.jpg
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