Original sentence: Balhae (698 – 926) (Bohai in Chinese, Пархэ also Бохай in Russian) was an ancient Korean kingdom established after the fall of Goguryeo
Edited sentence: Balhae (698 – 926) (Bohai in Chinese, Пархэ also Бохай in Russian) was an ancient Manchuria (also claimed by Koreans) kingdom established after the fall of Goguryeo