Why did the Tokugawa shoguns make Edo the political centre of Japan?
The Tokugawa shoguns moved the political center of Japan from Kyoto to Edo (modern Tokyo) in 1603 to consolidate their power and establish a more secure, centralized government.123
After achieving hegemony following the Battle of Sekigahara, Tokugawa Ieyasu sought to make his control permanent by shifting administrative arrangements. By establishing his headquarters in Edo, he distanced his government from the traditional influence of the imperial court in Kyoto, which was left to perform ceremonial functions under careful monitoring.4563
Edo was transformed into a strategic stronghold through the construction of the world's largest castle, which served as a symbol of shogunal authority. To maintain stability and ensure the subservience of the daimyo, the shogunate implemented the sankin kotai system. This required feudal lords to reside in Edo periodically and leave their families there as a form of hostage holding, which simultaneously fueled the city's rapid growth as a commercial and political hub.472