Jurchen people
Goryeo reunited the Korean peninsula during the later three kingdoms period and named itself as 'Empire'. But nowadays, Goryeo is known as a kingdom. The name 'Goryeo' was derived from Goguryeo, and the name Korea was derived from Goryeo. Goryeo adopted people from fallen Balhae. They also widened their territory to north by defending Liao dynasty and attacking the Jurchen people. Goryeo developed a splendid culture. The first metal type printed book Jikji was also from Korea. The Goryeo ware is one of the most famous legacies of this kingdom. Goryeo imported Chinese government system and developed into their own ways.