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]
Peace of Westphalia The Peace of Westphalia (German: Westfälischer Friede) was a series of peace treaties signed between May and October 1648 in the Westphalian cities of Osnabrück and Münster, effectively ending the European wars of religion. These treaties ended the Thirty Years' War (1618–1648) in the Holy Roman Empire between the Habsburgs and their Catholic allies on one side and the Protestant powers (Sweden, Denmark, Dutch, and Holy Roman principalities) and their Catholic (France) Anti-Habsburg allies on the other. The treaties also ended the Eighty Years' War (1568–1648) between Spain and the Dutch Republic, with Spain formally recognising the independence of the Dutch Republic.