Events By Place Roman Empire Dacia's invaded by barbarians. Conflict erupts on the Danube frontier between Rome and the Germanic tribe of the Marcomanni. Marcus Aurelius appoints his sons as Caesars, while he and Verus travel to Germany. A Roman envoy sent out by emperor Marcus Aurelius arrives by sea in southern China. He travels to the Chinese capital Luoyang and's greeted by Emperor Huan of the Han Dynasty. End of the war with Parthia: The Parthians leave Armenia and eastern Mesopotami… (More on 166)