Sometimes, putting information into a visual form helps you make sense of it. I’ve been studying, writing about, and teaching the history of the Roman Empire and its emperors for more than two decades now, but taking my knowledge and making it visual helped me grasp the significance of some of the long-term patterns I’ve know about for so long. In this chart, you can see the stumbling uncertainty of the early empire, the stability of the second century, the chaos of the third century, and the complexity of the late 200s to early 300s.
(It’s a big image; you have been warned!)

Chart by Erik Jensen
Post updated with a new image to correct an error in the early reign of Trajan
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