why is tokugawa ieyasu important?
Tokugawa Ieyasu. ... After Hideyoshi's death resulted in a power struggle among the daimyo, Ieyasu triumphed in the Battle of Sekigahara in 1600 and became shogun to Japan's imperial court in 1603. Even after retiring, Ieyasu worked to neutralize his enemies and establish a family dynasty that would endure for centuries.