Koreans in China
Prior to the modern era, Korea had been a territorially stable polity for centuries; as Jaeeun Kim described it, "The congruence of territory, polity and population was taken for granted". Large-scale emigration from Korea began as early as the mid-1860s, mainly into the Russian Far East and Northeast China; these emigrants became the ancestors of the two million Koreans in China and several hundred thousand Koryo-saram.