427 CE
King Jangsu transfers the Goguryeo capital from Gungnae City (modern Ji'an, Jilin) on the banks of the Yalu River to Pyongyang (modern Korea). Bonifacius, Roman governor (Last of the Romans), revolts in Africa against Emperor Valentinian III. Under the influence of Aetius, he is convicted of treason by empress-mother Galla Placidia. The Ephthalites (White Huns) invade Western Asia and reduce the Sasanian Empire threat to the Eastern Roman Empire. King Bahram V sends an expeditionary force into Khorasan.
Geopolitics & Diplomacy
- The Roman province of Pannonia Prima is finally assimilated into the Hunnic Empire.source
Conflict & Security
- King Jangsu transfers the Goguryeo capital from Gungnae City (modern Ji'an, Jilin) on the banks of the Yalu River to Pyongyang (modern Korea).source
- The Ephthalites (White Huns) invade Western Asia and reduce the Sasanian Empire threat to the Eastern Roman Empire. King Bahram V sends an expeditionary force into Khorasan.source
- Biyu becomes king of the Korean kingdom of Baekje.source
Crime & Justice
- Bonifacius, Roman governor (Last of the Romans), revolts in Africa against Emperor Valentinian III. Under the influence of Aetius, he is convicted of treason by empress-mother Galla Placidia.source