Age of Warring States

The Sengoku period (戦国時代 Sengoku jidai, "Age of Warring States"; c. 1467 – c. 1603) 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 Ashikaga shogunate, and came to an end when the system was re-established under the Tokugawa shogunate by Tokugawa Ieyasu. The Ōnin War in 1467 is usually considered the starting point of Sengoku period. There are several events which could be considered the end of it: The Siege of Odawara (1590), the Battle of Sekigahara (1600), the establishment of the Tokugawa Shogunate (1603), or the Siege of Osaka (1615).

Timeline

Time	Event
1467	Beginning of Ōnin War
1477	End of Ōnin War
1488	The Kaga Rebellion
1493	Hosokawa Masamoto succeeds in the Coup of Meio
	Hōjō Sōun seizes Izu Province
1507	Beginning of Ryo Hosokawa War (the succession dispute in the Hosokawa family)
1520	Hosokawa Takakuni defeats Hosokawa Sumimoto
1531	Hosokawa Harumoto defeats Hosokawa Takakuni
1535	Battle of Idano The forces of the Matsudaira defeat the rebel Masatoyo
1543	The Portuguese land on Tanegashima, becoming the first Europeans to arrive in Japan, and introduce the arquebus into Japanese warfare
1549	Miyoshi Nagayoshi betrays Hosokawa Harumoto
1551	Tainei-ji incident: Sue Harukata betrays Ōuchi Yoshitaka, taking control of western Honshu
1554	The tripartite pact among Takada, Hojo and Imagawa is signed
1555	Battle of Itsukushima: Mōri Motonari defeats Sue Harukata and goes on to supplant the Ōuchi as the foremost daimyo of western Honshu
1560	Battle of Okehazama: The outnumbered Oda Nobunaga defeats and kills Imagawa, Yoshimoto in a surprise attack
1568	Oda Nobunaga marches toward Kyoto
1570	Beginning of Ishiyama Hongan-ji War
1573	The end of Ashikaga shogunate
1575	Battle of Nagashino: Oda Nobunaga decisively defeats the Takeda cavalry with innovative arquebus tactics
1580	End of Ishiyama Hongan-ji War
1582	Akechi Mitsuhide assassinates Oda Nobunaga (Honnō-ji Incident); Hashiba Hideyoshi defeats Akechi at the Battle of Yamazaki
1585	Hashiba Hideyoshi is granted title of Kampaku, establishing his predominant authority; he is granted the surname Toyotomi a year after.
1590	Siege of Odawara: Toyotomi Hideyoshi defeats the Hōjō clan, unifying Japan under his rule
1592	First invasion of Korea
1597	Second invasion of Korea
1598	Toyotomi Hideyoshi dies
1600	Battle of Sekigahara: The Eastern Army under Tokugawa Ieyasu defeats the Western Army of Toyotomi loyalists
1603	The establishment of the Tokugawa shogunate
1615	Siege of Osaka: The last of the Toyotomi opposition to the Tokugawa shogunate is stamped out