[고조선 Gojoseon Ep.31] 북방의 울림: 부여의 영고와 고구려의 동맹 The Resonance of the North: Buyeo's Yeonggo and Goguryeo's Dongmaeng
The continental territories once influenced by the early Gojoseon confederation spanned extreme geographic and climatic variations. As the ancient empire diversified, the northern polities that emerged in the vast plains of the Songhua River and the rugged canyons of the Hun and Yalu Rivers developed specialized state assemblies to survive their specific environments. Historical texts, most notably the Records of the Three Kingdoms (Sanguozhi) , explicitly document two paramount state rituals practiced by