It was called the Kamakura period around from the end of the 12th century till the 14th century time.
The time when the government was assigned in Kamakura is pointed out.
The central Imperial Court government and the military government in Kanto coexisted.
Yoritomo Minamotono became a generalissimo shogun and started the Kamakura shogunate.
After Genji perished in three generation, the Hojo family became regency and moved politics.
There were Mongol invasions of a midway, 2 degrees this was removed.
In 1221, Gotoba Joko who was performing the cloister government by the Emperor of Kyoto issued the command which tries to regain political real power to Emperor, and beats the Hojo family, and took up soldiers.
But, the Hojo family side breaks the army by the side of a retired emperor.
Gotoba Joko was made the island sink in Oki in Shimane Prefecture, and was banished.
But the Shogunate was destroyed by the Emperor Godaigo who gathered the family who held dissatisfaction in the Shogunate.
This conflict is called a revolt in Shokyu(1221).
By Hōjō Yasutoki these regent in 1232 , created the original to the new law the practice of samurai society , create a law that Goseibai Shikimoku , rights and obligations of Gokenin have been established.
This is the law that is different from the Ritsuryo law.
In culture, the cult of the Buddhism for a simple and forcible work or the public appeared.
From this time, power of the politics moves from the Imperial Court to the Shogunate, and it is the times of the military administration.