Since Southern Sakhalin, just as Taiwan and Korea, was Japan's territory, the Japanese government took measures based on the viewpoint that the legislation in the region required the consent of the Imperial Diet.
南樺太についても、台湾や朝鮮と同様に日本の領土であったため、帝国議会の協賛を要するという見解を前提にした方策が採られた。