Crisis of the Third Century

The Crisis of the Third Century (235–284 AD) was a period in which the Roman Empire almost ended because of invasions, civil war, plague, and economic collapse. The crisis is sometimes called the "Military Anarchy" or "Imperial Crisis".Brown, Peter Robert Lamont 1971. The world of late antiquity. London: Thames and Hudson. ISBN 978-0500320228 

The crisis began with the assassination of Emperor Alexander Severus at the hands of his own troops in 235 AD. That started a 50-year period in which 20 to 25 rivals struggled for the throne. Most were important generals of the Roman army who took control over all or part of the empire. 

By 258–260, the empire had split into three competing states. The Gallic Empire included the western Roman provinces of Gaul, Britannia and Hispania. The Palmyrene Empire had the eastern provinces of Syria Palaestina and Aegyptus. Both became independent of the Roman Empire proper, which stood between them in Italy. The crisis ended with the ascension of Diocletian in 284.Potter, David Stone 2004. The Roman Empire at bay, AD 180–395.  Routledge history of the ancient world. Psychology Press. pp. 85, 167. ISBN 978-0415100588

The crisis resulted in many changes to the empire's institutions, society, economy, and eventually religion. It was a transition period between classical antiquity and late antiquity.

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Category:Roman Empire
Category:Civil wars
Category:3rd century