Year 370 (CCCLXX) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Valens (or, less frequently, year 1123 Ab urbe condita). The denomination 370 for this year has been used since the early medieval period, when the Anno Dominicalendar era became the prevalent method in Europe for naming years.
Events
By place
Roman Empire
Germanic Invasions: The German peoples surround the north borders of the Roman Empire, while the Huns are destroying everything in their path--villages, cities, even empires.
A law of Valentinian I and Valens bans marriages between Romans and barbarians under penalty of death.
An edict issued by Valentinian I and Valens bans the importation of wine and olive oil from areas controlled by the barbarians.[1]
Europe
The Huns migrate westward from the Volga into Europe, and subjugate the Alans and the Ostrogoths. With their arrival, a tradition of composite bows is introduced.
Athanaric, Gothic leader of the Tervingi, advances eastwards and takes up a defensive position along the banks of the Dniester (Romania).
Yuan Zhen (or Yanren), Chinese general and rebel leader
References
^Imperatores Valentinianus, Valens, Gratianus . Ad barbaricum transferendi vini et olei et liquaminis nullam quisquam habeat facultatem ne gustus quidem causa aut usus commerciorum. * VALENTIN. VALENS ET GRAT. AAA. AD THEODOTUM MAG. MIL.
^"Alaric - leader of Visigoths". Encyclopedia Britannica. Retrieved January 5, 2018.