The time of the latter term of the 16th century from the latter term of the 15th century is called the Sengoku period.
The power of the Muromachi Shogunate was completely lost by the warlike age.
Sengoku period, from when to when and, there are various opinions and the done one is difficult.
It is said that it is till 1615 when Ieyasu Tokugawa started the government and ruined the Toyotomi family from 1467 which generally had the Onin War.
They gradually destroy the Middle Ages dominance system , intensified the independence of in various places , such as determining the minute national law.
Ruled fief developed into an area state, and area states stood side by side in a various part of Japan.
This domination system is called daimyo-ryogoku system.
As for many of the problems between an area nation the solution was planned by military power.
The force of the self-territory was organized strong, and Oda Nobunaga who appeared in the middle in the 16th century was magnifying a rule area with warrior-peasant separation rapidly.
Agronomic performance improved as well as circulation in the area state developed.
A city was formed in each place rapidly.
Trade with Europe (Nanban boeki) has been begun.
Nanbanboeki indicates trade that was carried on between merchants in Japan and those in Spain or Portugal during the era from around the middle of sixteenth century to the early seventeenth century.
From then till the first half of the 17th century (the early Edo period), people frequently came and went between Japan and Spain through propagation of Christianity (Christian) and trade (with Spain and Portugal), which had an impact on Japanese culture including housing, food and clothing, and its world view.
The gun was introduced into Tanegashima in 1543.
It had big influence on tactics till then and religion idea of Japan.
Francisco Javier has begun to visit Japan in Japan and propagate in 1549.
It'll be expected to open it later about the conflict which occurred at a various part of Japan.