Heian period

The Heian period (794–1185) marks the final chapter of classical Japanese history. It began when Emperor Kammu, the 50th emperor, relocated the capital to Heian-kyō (modern Kyoto). The name "Heian" means "peace" in Japanese. During this era, Chinese influence waned, allowing a distinct national culture to flourish. The imperial court reached its artistic peak, especially in poetry and literature. Two native syllabaries—katakana and hiragana—were developed, enabling a vernacular literary tradition. Much of this writing came from court ladies, who were less trained in Chinese than their male counterparts.

On the surface, the Imperial House held authority, but real power rested with the Fujiwara clan. This aristocratic family intermarried with the imperial line, so most Heian emperors had Fujiwara mothers. The economy relied on barter and trade, since there was no national currency. The shōen system allowed aristocratic estates to grow and gradually assert independence from imperial control. Although the era saw little serious warfare or domestic strife, crime and banditry were widespread because emperors failed to police the country effectively.

The period began after Kammu moved the capital from Nara, which had been abandoned after only 70 years partly due to the rising influence of Buddhist institutions and the monk Dōkyō. Kammu chose Kyoto for its river access to the sea and land routes from the eastern provinces. The new capital was modeled on the Chinese Tang capital at Chang'an, but on a larger scale than Nara. Kammu tried to improve the Tang-style administrative system known as the Ritsuryō Code, though the two countries had vastly different levels of development. By avoiding drastic reforms, he reduced political struggles and became one of Japan’s most forceful emperors.

Kammu abandoned universal conscription in 792 but still launched major campaigns to subdue the Emishi in northern and eastern Japan. After temporary gains in 794, he appointed Sakanoue no Tamuramaro as Seii Taishōgun ("Barbarian-subduing generalissimo") in 797. By 801, the shōgun had defeated the Emishi, extending imperial domains to the eastern end of Honshū. Still, imperial control over the provinces remained weak. In the 9th and 10th centuries, great families ignored the Chinese-style land and tax systems, and power concentrated in the Fujiwara clan.

A rebellion in China near the end of the 9th century made the political situation unstable. Japanese missions to Tang China were suspended, cutting off Chinese imports and fostering the independent growth of kokufū bunka (national culture). Later, rebellions broke out in the eastern province of Hitachi and in the west under Fujiwara no Sumitomo. Samurai suppressed both disturbances on behalf of the emperor. In the north, the latter half of the 11th century saw the Former Nine Years War and the Latter Three Years' War between the central government and the Abe and Kiyohara clans. A true military takeover of the government was still centuries away, as much strength lay in the private armies of the shogunate.

By the 12th century, court authority weakened. The decentralized land allocation system, managed by aristocratic vassals who preferred court life to regional administration, became ineffective. The warrior class entered court influence after the 1156 Hōgen Rebellion. Taira no Kiyomori revived Fujiwara practices by placing his grandson on the throne and ruling as regent. The Taira clan was not overthrown until the Genpei War, which led to the Kamakura shogunate. The Kamakura period began in 1185 when Minamoto no Yoritomo’s family seized power from the emperors and established the shogunate in Kamakura.