Sengoku Jidai

The Sengoku Period (Japanese: Sengoku jidai) or "warring-states" period, is a long period of civil war in the history of Japan that began in the middle 15th century and lasted until the early 17th century. It started in 1467 with the Onin War (Onin no Ran)and continued until final peace and order was achieved in 1615 of the Edo Period

The absence of a legitimate central authority in the capital lasted until Oda Nobunaga's armies entered Kyoto in 1568, re-establishing the Muromachi Shogunate under the puppet shogun Ahikaga Yoshiaki to begin the Azuchi-Momoyama Period. However, despite a renewed central authority in Kyoto and Nobunaga's attempt to unify the country, the struggle for power among warring states continued until unification and final peace was achieved long after his sudden and monumental assassination in 1582 at Honnoji Temple in Kyoto (Honnoji no Hen).