2020 was definitely a step backwards. If you're wondering how great civilizations can end up collapsing: they just have many 2020s in a row over several decades, with exponentially compounding cascade effects at each new development.
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I strongly recommend this book from the late great Ronnie Ellenblaum. And also
@Byzanzforscher replies and criticism.https://books.google.fr/books/about/The_Collapse_of_the_Eastern_Mediterranea.html?id=V42h5LacG8gC&printsec=frontcover&source=kp_read_button&redir_esc=y … -
There will also be some ideas on this in my two forthcoming volumes on
#climate,#pandemics and the transformation of the old world in#antiquity and#middleages; a first glimpse provides the booktrailer:https://youtu.be/mg15pkgNxnA
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