Also, sacking of Taxila/takshashIla [1] and Nalanda [2] in Indian subcontinent by Huns and Islamic marauders. [1] https://en.wikipedia.org/wiki/Taxila https://

Also, sacking of Taxila/takshashIla [1] and Nalanda [2] in Indian subcontinent by Huns and Islamic marauders. [1] https://en.wikipedia.org/wiki/Taxila https://en.wikipedia.org/wiki/Taxila [2] https://en.wikipedia.org/wiki/Nalanda#Decline_and_end https://en.wikipedia.org/wiki/Nalanda#Decline_and_end The other, brighter side of this coin is the many remarkable rediscovery stories, like that of the Archimedes palimpsest [3] in the 1990s and Indian statesman Chanakya's 3rd century BCE manuscript 'Arthashastra' [4] in the 1900s. [3] http://www.archimedespalimpsest.org/ http://www.archimedespalimpsest.org/ [4] https://en.wikipedia.org/wiki/Arthashastra https://en.wikipedia.org/wiki/Arthashastra