why was the period between 1467 and 1568 called the age of the warring states
Sengoku period 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.[1] 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.[2][3]