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Aftermath
After the fall of Balhae and its last king in 926, it was renamed
Dongdan by its new Khitan masters, who had control over most
of Balhae's old territories.
However, starting from 927, many rebellions were triggered throughout
the domains. These rebellions were eventually turned into several
Balhae revivals. Out of these, only three succeeded and established
kingdoms: Later Balhae, Jung-Ahn Kingdom, and Dae-Won Kingdom.
These three kingdoms were able to temporarily chase the Khitan
and their Dongdan Kingdom out into the Liaodong peninsula[citation
needed], but they were all eventually decimated by the Liao
Empire.
In 1034, Dae Gwang-Hyun, the last Crown Prince of Balhae, revolted
against their Khitan masters. After being defeated, he fled
to Koryo, where he was granted protection and the imperial surname.
This resulted in the Liao breaking off diplomatic relations
with Koryo, but there was no threat to invade |