By place Roman Empire •
March 15 – Emperor
Constantius II elevates his 25-year-old cousin
Constantius Gallus to
Caesar at
Sirmium (
Pannonia). He arranges a marriage with his sister
Constantina, and puts him in charge of the Eastern portion of the
Roman Empire. • Constantius II marches West with a large field army (around 60,000 men) to topple
Magnus Magnentius in
Pannonia. •
May 7 – The
Jewish revolt against Constantius Gallus breaks out. After his arrival at
Antioch, the
Jews begin a rebellion in
Palestine. The Roman
garrison in the town of
Diocesarea is wiped out. •
September 28 –
Battle of Mursa Major: Constantius II defeats the usurper Magnentius along the
valley of the
Drava. The battle is one of the bloodiest in
Roman military history. During the fighting
Marcellinus, a general of Magnentius is killed; Magnentius himself survives. • Winter – Magnentius flees to
Aquileia in northern
Italy and fortifies the mountain passes in the
Alps.
China • Emperor
Shi Zhi, last ruler of the
Later Zhao dynasty, is killed by
Ran Min's forces, an action that sets the stage for Wei's victory in the
Ran Wei–Later Zhao war. •
Fú Jiàn, an ethnic
Di, declares himself "Heavenly Prince" (
Tian Wang) during the collapse of
Later Zhao, and establishes
Former Qin.
By topic Art and Science • In
India, a new process makes possible the extraction of
sugar from
sugarcane.
Religion •
Macedonius is restored as
Patriarch of Constantinople. == Births ==