Balhae

Balhae (698 – 926) (발해, Bohai in Chinese, Бохай or Пархэ in Russian) was a Korean empire established in Manchuria after the fall of Goguryeo that existed during the North South States Period of Korea along with Unified Silla. After Goguryeo's capital and southern territories fell to Unified Silla, Dae Jo-yeong, a man from Goguryeo whose father was Dae Jung-sang, established Jin (振, Zhen in Chinese), later called Balhae. It was a successor state to Goguryeo.

Balhae occupied southern parts of Manchuria (Northeast China) and Primorsky Krai, and the northern part of the Korean peninsula. It was defeated by the Khitans in 926, and most of its northern territories were absorbed into the Liao Dynasty while the southern parts were absorbed into Goryeo.