Theory of Japanese and Korean common ancestry

Japanese: 日鮮同祖論 - にっせんどうそろん

This assertion states that the Japanese and Korean peoples share the same ancestors, are like brothers, or a relationship similar to that of a main family and a branch family, and should essentially be one. It was touted to explain that Japan's invasion and rule of Korea was historically legitimate. The framework of the theory of Japanese and Korean common ancestry was formed a long time ago, and can be traced back at least to Japanese classical literature in the mid-Edo period. Hirata Atsutane and others' research into the Kojiki and Nihon Shoki in Japanese classical literature argued that the Japanese and Korean peoples had been in close contact since the stage of nation-building, and that a hierarchical relationship had been established between Japan and Korea in which Japan was placed in a dominant position, thus forming the framework for the theory of Japanese and Korean common ancestry.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

日朝両民族はその祖先を同じくし，兄弟あるいは本家と分家に擬せられる間柄であり，本来一体となるべきであるという主張。日本の朝鮮侵略，朝鮮支配が歴史的に合法なものであると説明するために喧伝（けんでん）された。日鮮同祖論の枠組みが形成されたのは古く，少なくとも江戸時代中期の国学にまでさかのぼることができる。平田篤胤らの国学における《古事記》《日本書紀》の研究は，日朝両民族は国家形成の段階から密接な関係にあったこと，日朝間には日本を支配的な地位につける上下関係が成立することを説き，日鮮同祖論の骨格を作りあげた。

出典　株式会社平凡社世界大百科事典第２版について　情報

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