Along with Oda Nobunaga and Toyotomi Hideyoshi, Tokugawa was one of the three unifiers of war-torn, premodern Japan. The three warriors established military control over the whole country and succeeded one another in the dictatorship. Tokugawa’s time as shogun, or military dictator, ushered in a period of internal peace, urban growth, increased literacy, and resistance to Western influences. He died in 1616, but the Tokugawa shogunate did not die with him. For how long did his heirs rule Japan? Discuss