Chinese and Japanese influences have been strong throughout Korean history, but the Koreans, descended from Tungusic tribal peoples, are a distinct racial and cultural group. The documented history of Korea begins in the 12th cent. BC, when a Chinese scholar, Ki-tze (Kija), founded a colony at Pyongyang. After 100 BC the Chinese colony of Lolang, established near Pyongyang, exerted a strong cultural influence on the Korean tribes settled in the peninsula. The kingdom of Koguryo, the first native Korean state, arose in the north near the Yalu River in the 1st cent. AD, and by the 4th cent. it had conquered Lolang. In the south, two kingdoms emerged, that of Paekche (c.AD 250) and the powerful kingdom of Silla (c.AD 350). With Chinese support, the kingdom of Silla conquered Koguryo and Paekche in the 7th cent. and unified the peninsula