Tree-ring records suggest that drought played a role in Roman Britain’s decline
Molly Glick writes: Roman Britain collapsed into chaos in the spring of 367 A.D.—the rival Picts attacked by land and sea, while the Scotti barged in from the west and Saxons from the south. Anarchy ensued in an event that’s now known as the Barbarian Conspiracy: The invaders captured and murdered senior commanders, and some Roman soldiers may have even joined in. It’s considered a pivotal event in the abandonment of Roman Britain. Historians have surmised some of the potential…