The Edo shogunate gradually established its domination by turning territories that were left unoccupied as a result of kaieki or genpo into shogunate territories and by allocating these territories to the relatives and hereditary vassals of the Tokugawa family and transferring feudal lords unrelated to the family to remote territories.
江戸幕府は改易、減封によって生じた空白地を天領（直轄地）にし、親藩・譜代大名を新たに配置して、外様大名を遠隔地に転封するなどして幕府権力の絶対優位を確立していった。