the last year that Britain was part of the Roman Empire. Irish raiders from the west, Picts from the north, and Saxons from the east were ruthlessly harrying the island. The nobles sent a letter to their emperor to ask for imperial help, preferably in the form of legions to fight off the invaders. However, Emperor Honorius had no armies to spare, and instead he sent only a return letter with the now-famous line, “look to your own defenses.”