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It is necessary to utilize the results of research studies in neighboring regions for research on the Mandolin-shaped Bronze Daggers culture in North Korea. changes in climate and exchange relations identified in the process of forming and spreading the 'metal civilization', represented by the Mandolin-shaped Bronze Daggers culture, are noted as factors that cause cultural change. In particular, the climate cold in Northeast Asia is drawing attention as a breakthrough in the formation of the Mandolin-shaped Bronze Daggers culture and a change to the Slender Bronze Daggers culture. In the North Korean region, the regional characteristics of the South and the North are confirmed based on the Cheongcheon River, respectively, and the regional characteristics of the East and the West are highlighted based on the central mountainous region. Considering the sort and type of bronze artifacts and the ratio of alloy components, it can be seen that northwestern Korea and northeast Korea had a differentiated network or interaction due to their strong connection to Liaodong and Jilin, respectively. In the North Korean region, internal and external interactions increase, and exchange relations are further strengthened after the spread of the Zhengjiawazi Assemblage (6th~5th B.C.E). Due to the spread of the Zhengjiawazi Assemblage, the metal culture in North Korea changes from the Liaodong style to the Liaoxi (or Liaozhong) style, and accordingly, the exchange and ideological system of he Mandolin-shaped Bronze Daggers culture is also changed. The rapid increase of Liaozhong style’s bronze artifacts such as the bronze daggers and bronze mirrors is closely related to the growth of polity such as 'Gojoseon'.
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