In the closing days of the Tokugawa Shogunate, Nobuhiro SATO, an economist argued absolutism of nationalizing lands and finding ways into foreign countries, while Shoin YOSHIDA argued in his book titled yuin-roku (descriptions in prison) reclamation of Ezo and invasion for the control of such as the Kamchatkan Peninsula, Korea, Taiwan, and Manchuria.
幕末には経済学者佐藤信淵は土地国有化と海外進出を行う絶対主義国家を論じ、吉田松陰は幽囚録で蝦夷地開拓とともにカムチャッカ半島、朝鮮、台湾、満州等への侵略統治論を展開していた。