Tacitus wrote that the Year of the Four Emperors, in 68-69AD, revealed "The Secret of the Empire." It was a secret that would lead to the near collapse of the Roman Empire in the third century. Find out in this episode what that secret was!

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Find my latest book, Justinian's Empire, on Amazon.com and Amazon.co.uk. For German listeners, find the German translation of the first book in my series on the 'Fall of the Roman Empire', Die römische Revolution, on Amazon.de. Finally check out my new YouTube videos on the fall of the Roman Empire.