Tokugawa Bakufu System

Timeline

1. 1590–1598Edo · EdoAfter the 1590 Battle of Odawara, Ieyasu was granted the eight Kantō provinces and entered Edo, massively rebuilding Edo Castle, reorganizing the shukudai and bugyō systems, and accumulating grain, money, and manpower to form a Kantō power base independent of Toyotomi central authority yet obedient to its nominal supremacy.
2. 1598–1599Osaka · Kyoto · KinkiAfter Toyotomi Hideyoshi's death in 1598, the Go-Tairō and Go-Bugyō system struggled to maintain unity. Ieyasu, as head of the Go-Tairō, intervened in governance, gradually expanding influence through marriages, personnel appointments, and land distribution, forming a standoff with anti-Ieyasu forces such as Ishida Mitsunari; the bakufu's power structure took shape amid conflict.
3. 1600Sekigahara · Edo · SekigaharaIn September–October 1600 the Eastern Army won the Battle of Sekigahara; Ieyasu immediately transferred and re-assigned Western Army daimyo, establishing a samurai order centered on himself. By year's end he had begun constructing the prototype of the han-bakufu system with the shogunal house at its apex: daimyo statuses were reclassified, and principles for hostages and domain reorganization were established, paving the way for the formal founding of the shogunate in 1603.