History: Old Japan

The Nara period of the 8th century marked the emergence of a strong Japanese state, centered on an imperial court in the city of Heijō-kyō (modern Nara). In addition to the continuing adoption of Chinese administrative practices, the Nara period is characterized by the appearance of a nascent written literature with the completion of the massive chronicles Kojiki (712) and Nihon Shoki (720). The smallpox epidemic of 735–737 is believed to have killed as much as one-third of Japan's population. In 784, Emperor Kammu moved the capital from Nara to Nagaoka-kyō for a ten-year period before relocating it to Heian-kyō (modern Kyoto) in 794, where it remained for more than a millennium. This marked the beginning of the Heian period, during which time a distinctly indigenous Japanese culture emerged, noted for its art, poetry and literature. Lady Murasaki's The Tale of Genji and the lyrics of Japan's national anthem Kimigayo were written during this time.
Feudal era
Japan's feudal era was characterized by the emergence of a ruling class of warriors, the samurai. In 1185, following the defeat of the rival Taira clan, Minamoto no Yoritomo was appointed Shogun and established a base of power in Kamakura. After Yoritomo's death, the Hōjō clan came to rule as regents for the shoguns. Zen Buddhism was introduced from China in the Kamakura period (1185–1333) and became popular among the samurai class. The Kamakura shogunate repelled Mongol invasions in 1274 and 1281, aided by a storm that the Japanese interpreted as a kamikaze or Divine Wind. The Kamakura shogunate was eventually overthrown by Emperor Go-Daigo, who was soon himself defeated by Ashikaga Takauji in 1336. The succeeding Ashikaga shogunate failed to control the feudal warlords (daimyo), and a civil war (the Ōnin War) began in 1467 and opened the century-long Sengoku period (“Warring States”).