<P> The Sengoku period ( 戦国 時代 , Sengoku Jidai , `` Age of Warring States '' ; c. 1467 -- c. 1568 ) is a period in Japanese history marked by social upheaval , political intrigue and near - constant military conflict . Japanese historians named it after the otherwise unrelated Warring States period in China . It was initiated by the Ōnin War , which collapsed the Japanese feudal system under the Ashikaga shogunate , and came to an end when the system was re-established under the Tokugawa shogunate by Tokugawa Ieyasu . </P>
why was the period between 1467 and 1568 called the age of the warring states
Japanese historians named it after the otherwise unrelated Warring States period in China