Kyoto’s peaceful name masked Fujiwara court capture
Japan’s Heian period (794–1185) began when Emperor Kammu moved the capital to Heian-kyō—modern Kyoto—after Nara. Heian means “peace,” yet real power settled with the Fujiwara clan, whose daughters mothered most emperors while aristocrats neglected provincial administration.
The capital moved twice in quick succession. Emperor Kammu, the 50th emperor, left Nara partly to escape the political weight of its Buddhist establishment, which had peaked with the monk Dōkyō; Nara had lasted only about 70 years. He tried Nagaoka-kyō first, but a run of disasters drove him on, and in 794 he settled on Heian-kyō, today's Kyoto, which had river links to the sea and overland routes east. It stayed the imperial seat for roughly a thousand years. Like Nara, it copied the grid of the Tang capital Chang'an, only larger, and Kammu tried to make the Tang-inspired Ritsuryō legal code work better.
Kammu dropped general conscription in 792 yet still campaigned against the Emishi of the north and east. In 797 he named Sakanoue no Tamuramaro Seii Taishōgun, roughly barbarian-subduing generalissimo, and by 801 the Emishi were beaten and imperial territory reached the far eastern end of Honshū.
Real authority drifted to the Fujiwara, whose daughters became the mothers of most Heian emperors. There was no national currency, so exchange ran largely on barter, and tax-exempt shōen estates let aristocrats slip out from under the court. Serious war was rare, but banditry flourished because the throne could not police the provinces. When rebellion unsettled Tang China late in the ninth century, Japan suspended its embassies, Chinese imports dried up, and a homegrown style called kokufū bunka developed. The kana syllabaries, katakana and hiragana, appeared, and court women, less schooled in Chinese than men, wrote much of the vernacular literature for which the age is known.
The warriors who put down revolts in the provinces eventually came to court. After the Hōgen Rebellion of 1156, Taira no Kiyomori copied the Fujiwara playbook by seating his grandson as emperor and ruling as regent. The Genpei War ended Taira dominance, and in 1185 Minamoto no Yoritomo's family took power and founded a shogunate at Kamakura, closing the period.
Source: Heian period