Tokugawa shogunate
History

Following the Sengoku period ("Warring States period"), the central government had been largely re-established by Oda Nobunaga during the Azuchi–Momoyama period. After the Battle of Sekigahara in 1600, central authority fell to Tokugawa Ieyasu. While many daimyos who fought against him were extinguished or had their holdings reduced, Ieyasu was committed to retaining the daimyos and the han (domains) as components under his new shogunate. Daimyos who sided with Ieyasu were rewarded, and some of Ieyasu's former vassals were made daimyos and were located strategically throughout the country. The sankin-kotai policy, in an effort to constrain rebellions by the daimyos, mandated the housing of wives and children of the daimyos in the capital as hostages.

In 1616, there was a failed attempt of the invasion of Taiwan by a Shogunate subject named Murayama Tōan.

A long period of peace occurred between the Siege of Osaka in 1615 and the Keian Uprising in 1651. This period saw the bakufu prioritise civil administration, while civil society witnessed a surge in trade and industrial activities. Trade under the reign of Ieyasu saw much new wealth created by mining and goods manufacturing, which resulted in a rural population flow to urban areas. By the Genroku period (1688–1704) Japan saw a period of material prosperity and the blossoming of the arts, such as the early development of ukiyo-e by Moronobu. The reign of Tokugawa Yoshimune (1716–1745) saw poor harvests and a fall in tax revenue in the early 1720s, as a result he pushed for the Kyoho reforms to repair the finances of the bakufu as he believed the military aristocracy was losing its power against the rich merchants and landowners.

Society in the Tokugawa period, unlike in previous shogunates, was supposedly based on the strict class hierarchy originally established by Toyotomi Hideyoshi. The daimyō (lords) were at the top, followed by the warrior-caste of samurai, with the farmers, artisans, and traders ranking below. In some parts of the country, particularly smaller regions, daimyō, and samurai were more or less identical, since daimyō might be trained as samurai, and samurai might act as local rulers.

The largely inflexible nature of this social stratification system unleashed disruptive forces over time. Taxes on the peasantry were set at fixed amounts that did not account for inflation or other changes in monetary value. As a result, the tax revenues collected by the samurai landowners increasingly declined over time. A 2017 study found that peasant rebellions and desertion lowered tax rates and inhibited state growth in the Tokugawa shogunate. By the mid-18th century, both the shogun and daimyos were hampered by financial difficulties, whereas more wealth flowed to the merchant class. Peasant uprisings and samurai discontent became increasingly prevalent. Some reforms were enacted to attend to these issues such as the Kansei reform (1787–1793) by Matsudaira Sadanobu. He bolstered the bakufu's rice stockpiles and mandated daimyos to follow suit. He cut down urban spending, allocated reserves for potential famines, and urged city-dwelling peasants to return to rural areas.

By 1800, Japan included five cities with over 100,000 residents, and three among the world's twenty cities that had more than 300,000 inhabitants. Edo likely claimed the title of the world's most populous city, housing over one million people.
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