Edo period

The Edo period, also known as the Tokugawa period, is the period between 1600 or 1603 and 1868 in the history of Japan, when the country was under the rule of the Tokugawa shogunate and some 300 regional daimyo, or feudal lords. Emerging from the chaos of the Sengoku period, the Edo period was characterized by prolonged peace and stability, urbanization and economic growth, strict social order, isolationist foreign policies, and popular enjoyment of arts and culture.

In 1600, Tokugawa Ieyasu prevailed at the Battle of Sekigahara and established hegemony over most of Japan, and in 1603 was given the title shogun by Emperor Go-Yōzei. Ieyasu resigned two years later in favor of his son Hidetada, but maintained power, and defeated the primary rival to his authority, Toyotomi Hideyori, at the Siege of Osaka in 1615 before his death the next year. Peace generally prevailed from this point on, making samurai largely redundant. Tokugawa shoguns continued Ieyasu's policies of conformity, including a formalization of social classes in a strict hierarchy. By 1639, all foreigners were expelled under the policy of sakoku, with the exception of Dutch traders on the island of Dejima in Nagasaki, beginning a period of isolation. From 1635, daimyō had to spend alternating years in the capital Edo, where their family was required to reside permanently, in a system of "alternate attendance" in order to keep them in check.

During the Edo period, merchants greatly prospered, and laid the foundation for Japan's later zaibatsu business conglomerates. Despite general restrictions on travel within the country, daimyō processions to and from Edo developed a network of roads and inns. A commoner culture emerged in Edo and cities such as Ōsaka and Kyōto, and art forms such as kabuki and ukiyo-e flourished. Japanese scholars developed schools of neo-Confucian philosophy, and samurai, now mostly employed as administrators, formalized their code of morality in the bushido code. In 1853, Japan was forcibly opened to Western trade by United States Commodore Matthew C. Perry, beginning the Bakumatsu ("end of the bakufu") era. The Edo period came to an end in 1868 with the Meiji Restoration and the Boshin War, which restored imperial rule to Japan.

A revolution took place from the time of the Kamakura shogunate, which existed with the Tennō's court, to the Tokugawa, when the samurai became the unchallenged rulers in what historian Edwin O. Reischauer called a "centralized feudal" form of the shogunate. Instrumental in the rise of the new bakufu was Tokugawa Ieyasu, the main beneficiary of the achievements of Oda Nobunaga and Toyotomi Hideyoshi. Already a powerful daimyo (feudal lord), Ieyasu profited by his transfer to the rich Kantō area. He maintained two million koku, or thirty-six hectares of land, a new headquarters at Edo, a strategically situated castle town (the future Tokyo), and also had an additional two million seven hundred thousand koku of land and thirty-eight vassals under his control. After Hideyoshi's death, Ieyasu moved quickly to seize control of the Toyotomi clan.^{[citation needed]}

Ieyasu's victory over the western daimyo at the Battle of Sekigahara (21 October 1600, or in the old Japanese calendar, on the 15th day of the ninth month of the fifth year of the Keichō era) gave him control of all Japan. He rapidly abolished numerous enemy daimyo houses, reduced others, such as that of the Toyotomi, and redistributed the spoils of war to his family and allies. Ieyasu still failed to achieve complete control of the western daimyo, but his assumption of the title of shōgun helped consolidate the alliance system. After further strengthening his power base, Ieyasu installed his son Hidetada (1579–1632) as shōgun and himself as retired shōgun in 1605. The Toyotomi were still a significant threat, and Ieyasu devoted the next decade to their eradication. In 1615, the Tokugawa army destroyed the Toyotomi stronghold at Osaka.

The Tokugawa (or Edo) period brought 250 years of stability to Japan. The political system evolved into what historians call bakuhan, a combination of the terms bakufu and han (domains) to describe the government and society of the period. In the bakuhan, the shōgun had national authority, and the daimyo had regional authority. This represented a new unity in the feudal structure, which featured an increasingly large bureaucracy to administer the mixture of centralized and decentralized authorities. The Tokugawa became more powerful during their first century of rule: land redistribution gave them nearly seven million koku, control of the most important cities, and a land assessment system reaping great revenues.

The feudal hierarchy was completed by the various classes of daimyo. Closest to the Tokugawa house were the shinpan, or "related houses". There were twenty-three daimyo on the borders of Tokugawa lands, all directly related to Ieyasu. The shinpan held mostly honorary titles and advisory posts in the bakufu. The second class of the hierarchy was the fudai, or "house daimyo", rewarded with lands close to the Tokugawa holdings for their faithful service. By the 18th century, 145 fudai controlled much smaller han, the greatest assessed at 250,000 koku.

Members of the fudai class staffed most of the major bakufu offices. Ninety-seven han formed the third group, the tozama (outside vassals), former opponents or new allies. The tozama were located mostly on the peripheries of the archipelago and collectively controlled nearly ten million koku of productive land. Because the tozama were the least trusted of the daimyo, they were the most cautiously managed and generously treated, although they were excluded from central government positions.^{[citation needed]}