aegukga baekje balhae battle of chingshanli buyeo kingdom byeonhan confederacy china chongqing constitution of the republic of korea currency division of korea dongye empire of japan flag of korea gaya confederacy goguryeo gojoseon goryeo government government in exile hangul hanja history of korea history of north korea history of south korea history of the republic of china hong jin jeulmun pottery period jin state jinhan confederacy joseon dynasty kim gu korea korea under japanese rule korean empire korean liberation army korean war korean language later three kingdoms list of monarchs of korea mahan confederacy manchu invasion of korea military history of korea mongol invasions of korea mumun pottery period national anthem naval history of korea north south states period office of strategic services okjeo park eunsik prehistoric korea president proto-three kingdoms of korea republic samhan seoul shanghai silla surrender of japan syngman rhee three kingdoms of korea timeline of korean history unified silla yi donghwi yi dongnyeong yi sang-ryong