11 events the sources record for this year, grouped by region.
What happened
China (6)
Wang Mi of Donglai rebelled and attacked Qing and Xu provinces; the governors of Changguang and Dongmou were killed. (Book of Jin (Jinshu), Imperial Annals 晉書 卷005 帝紀 永嘉1年2月)
Many commanderies of Bing province fell to Liu Yuanhai, but Governor Liu Kun alone held Jinyang. (Book of Jin (Jinshu), Imperial Annals 晉書 卷005 帝紀 永嘉1年3月)
Ji Sang, chief of the horse herders, rebelled, took Ye, killed Prince Teng of Xincai, and burned the Ye Palace. (Book of Jin (Jinshu), Imperial Annals 晉書 卷005 帝紀 永嘉1年5月)
Prince Rui of Langya was made General Who Pacifies the East and Commander of Yangzhou and Jiangnan, and stationed at Jianye (the starting point of the Eastern Jin). (Book of Jin (Jinshu), Imperial Annals 晉書 卷005 帝紀 永嘉1年7月)
In the second month Wang Mi invaded the two provinces of Qing and Xu, proclaimed himself Grand General Who Conquers the East, and attacked and killed governors of the two-thousand-bushel rank. (Zizhi Tongjian (Comprehensive Mirror) 卷086 307년 단락2 제1문)
Ji Sang gathered followers and plundered commanderies and counties, calling himself Grand General and claiming revenge for the Prince of Chengdu; with Shi Le as vanguard, he won wherever he went and at last attacked Ye. (Zizhi Tongjian (Comprehensive Mirror) 卷086 307년 단락12 제1문)
Southern Europe (5)
Severus, going around the walls of Rome, is abandoned by his men, who have gone over to Maxentius, flees, is besieged at Ravenna and dies. (Aurelius Victor, De Caesaribus Aur. Vict. Caes. 40.7)
Caesar Severus, sent by Galerius against Maxentius, marches out of Milan with Moorish legions, but Maxentius bribes his soldiers and the praetorian prefect Anullinus with money, and Severus is easily beaten. (Zosimus, New History Zos. 2 (1814 영역) p.40)
Severus flees to the strongly fortified Ravenna, but Maximian Herculius persuades him with false oaths to go to Rome. (Zosimus, New History Zos. 2 (1814 영역) p.41)
On his way to Rome, Severus is seized at Tres Tabernae by Maxentius's trap and executed at once. (Zosimus, New History Zos. 2 (1814 영역) p.41)
Galerius, who comes from the East to Italy to avenge Severus, senses his soldiers' disloyalty and returns to the East without fighting. (Zosimus, New History Zos. 2 (1814 영역) p.41)