The Kamakura period (鎌倉時代 Kamakura jidai?, 1185–1333) is a period of Japanese history that marks the governance by the Kamakura shogunate, officially established in 1192 in Kamakura by the first shogun, Minamoto no Yoritomo. The period is known for the emergence of the samurai, the warrior caste, and for the establishment of feudalism in Japan.
The Kamakura period ended in 1333 with the destruction of the shogunate and the short reestablishment of imperial rule under Emperor Go-Daigo by Ashikaga Takauji, Nitta Yoshisada, and Kusunoki Masashige.
The Kamakura period marks the transition to land-based economies and a concentration of advanced military technologies in the hands of a specialized fighting class. Lords required the loyal services of vassals, who were rewarded with fiefs of their own. The fief holders exercised local military rule.
Once Minamoto Yoritomo had consolidated his power, he established a new government at his family home in Kamakura. He called his government a bakufu (幕府, tent government), but because he was given the ancient high military title Seii Tai-shōgun by the Emperor, the government is often referred to in Western literature as the shogunate. Yoritomo followed the Fujiwara form of house government and had an administrative board Mandokoro (政所?), a board of retainers (Samurai-dokoro (侍所?)), and a board of inquiry (). After confiscating estates in central and western Japan, he appointed stewards for the estates and constables for the provinces. As shogun, Yoritomo was both the steward and the constable general. The Kamakura shogunate was not a national regime, however, and although it controlled large tracts of land, there was strong resistance to the stewards. The regime continued warfare against the Northern Fujiwara, but never brought either the north or the west under complete military control. However, the 4th leader of the Northern Fujiwara Fujiwara no Yasuhira was defeated by Yoritomo in 1189, and the 100-year-long prosperity of the north disappeared. The old court resided in Kyoto, continuing to hold the land over which it had jurisdiction, while newly organized military families were attracted to Kamakura.