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https://www.history.com/topics/ancient-rome/ancient-rome

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https://www.science.smith.edu/climatelit/rise-and-fall-of-the-western-roman-empire/

https://academic.oup.com/book/45868/chapter-abstract/400820309?redirectedFrom=fulltext

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https://www.britannica.com/story/did-nero-really-fiddle-as-rome-burned

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https://www.newyorker.com/magazine/2021/06/14/how-nasty-was-nero-really

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https://www.britannica.com/topic/legion

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https://www.thoughtco.com/fall-of-rome-short-timeline-121196

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https://www.metmuseum.org/toah/hd/augs/hd_augs.htm