The Tokugawa Shogunate, also known as the Edo period (1603–1868), was a time of unprecedented peace and stability in Japan, following centuries of war and political fragmentation. This era began with the victory of Tokugawa Ieyasu at the Battle of Sekigahara in 1600, a decisive conflict that allowed him to consolidate power over the warring daimyo. Three years later, in 1603, he was granted the title of shogun by the emperor, officially marking the beginning of Tokugawa rule.

Ieyasu's triumph at Sekigahara was not merely a military success but also a demonstration of his strategic brilliance and political foresight. By carefully forging alliances and exploiting rivalries among the daimyo, he ensured that his Tokugawa clan would emerge as the dominant force in Japan. Once in power, Ieyasu took immediate steps to secure his family's hold over the nation. He redistributed land among the daimyo, rewarding loyal vassals and weakening potential threats. This reorganization of landholdings laid the foundation for the centralized feudal system that would define the Tokugawa era.

Although Ieyasu formally retired in 1605, passing the title of shogun to his son Tokugawa Hidetada, he continued to wield significant influence from behind the scenes. His retirement was a strategic move designed to solidify the legitimacy of hereditary succession, ensuring that the Tokugawa family would maintain control for generations. This transition of power set a precedent for stability, preventing the kind of succession disputes that had plagued previous shogunates.