240

Millennium:	1st millennium
Centuries:	2nd century – 3rd century – 4th century
Decades:	210s 220s 230s – 240s – 250s 260s 270s
Years:	237 238 239 – 240 – 241 242 243

Hatra ruins

Year 240 (CCXL) was a leap year starting on Wednesday of the Julian calendar.

Events[change | change source]

The Roman Empire is threatened on several fronts at the same time. Africa revolts and tribes in northwest Germania, under the name of the Franks, are raiding the Rhine frontier.

At the court of Ardashir I, Mani, a young mystic of Ctesiphon, calls himself a prophet and preaches his doctrine, Manichaeism, throughout the Persian Empire.