Until Kang Man'gil's publication of a book entitled, "The National Revolutionary Party of Korea and the United Front(朝鮮民族革命黨과 統一戰線)" (Hwap'yŏngsa 和平社, 1991), the history of national movements in Korea was regarded as having centered on the nationalist movement associated with the Provisional Government of the Republic of Korea and the related struggle for independence. Meanwhile, in North Korea, the contribution of all national movements other than that of the Kim Ilsŏng (金日成)-led anti-Japanese armed struggle were, in accordance with the tenets of the Chuch'e Ideology(主體思想), expunged from history books. In Japan, the major focus was on the fact that the 1920s saw the socialist camp replace thenationalist forces as the mainstream movement. However, Kang Man'gil sought to reorganize the history of the national movement around the United Front, a group within which no specific party or social class dominated or exercised a hegemonic position. Kang regarded this task as the main role of historical studies, namely building a cornerstone based upon which the division of Korea could be overcome. His study on the National Revolutionary Party of Korea (朝鮮民族革命黨) was the first of his works which reflected his unique consciousness of issues. Therefore, Kang's historical study, which identifies the history of the national movement as a part of the movement to establish a united nation state, can be regarded as having been embedded with a strong sense of contemporariness. The united front policy of the National Revolutionary Party of Korea was different from that adopted by those who implemented the reconstruction of the Communist Party of Korea (朝鮮共産黨) as well as the guerilla units who engaged in armed struggles in Manchuria. Above all, the National Revolutionary Party of Korea did not recognize the notion of the hegemony of the proletariat, or the leadership of the Communist Party of Korea. Although changeswere made to the united front policy of the socialists during the mid-1930s, these fundamental differences were never narrowed down. Nevertheless, as the war gradually expanded, efforts were made to establish an organization which could overcome these differences and implement communal actions. In effect, a political situation was created in which it became impossible for either side to advocate an anti-Communist or anti-nationalist line. This can be understood as the main reasoning behind the National Revolutionary Party of Korea's decision to join the Provisional Government of the Republic of Korea. In addition, the fact that such a union only successfully took place in that area can be explained by the ideological affinity that existed between Kim Ku's(金九) group and the National Revolutionary Party of Korea, both of which shared a belief in the notion of 'socialist nationalism'(社會主義的 民族主義).