
https://www.ips-journal.eu/topics/economy-and-ecology/how-to-prevent-humanitarian-crises-6665/

https://www.iso.org/files/live/sites/isoorg/files/store/en/PUB100470.pdf

https://theconversation.com/mary-beard-is-right-roman-britain-was-multi-ethnic-so-why-does-this-upset-people-so-much-82269