第四章：以社會建構主義的觀點，對上述歷史進行分析。 Japan invaded China is one of big events in recent international history, and the transformation of Japan’s foreign policy on China during 1918 to 1932 was the core of the period of time. Regarding the domestic research documents lacking a systematic research based on international relationship theories, the author studies the topic about “The Evolution of Japan''s Mainland Policy” during 1918 to 1932 with the viewpoint of social constructionism. The concrete purpose of this dissertation are two: 1. Arrangement of international ideals, events and Japan’s ideals and mainland policy during 1918 to 1932. 2. Analysis of the interaction between foreign affairs and Japan in the viewpoint of social constructionism. The structure of this dissertation is divided into four chapters: Chapter One: Arrangement the before and after of international ideal with effect of international events and Japan ideal and mainland policy during the time of Paris Peace Conference. Chapter Two: Arrangement the before and after of international ideal with effect of international events and Japan ideal and mainland policy during the time of Washington Naval Conference. Chapter Three: Arrangement the before and after of international ideal with effect of international events and Japan ideal and mainland policy during the time of Great Depression and Mukden Incident. Chapter Four: Analysis with the viewpoint of social constructionism.
