Sengoku Period - Unification

Unification

After nearly a century and a half of political instability and warfare, Japan was on the verge of unification by Oda Nobunaga, who had emerged from obscurity in the province of Owari (present-day Aichi Prefecture) to dominate central Japan, when in 1582 Nobunaga himself fell as victim to the treachery of one of his own generals, Akechi Mitsuhide. This in turn provided Toyotomi Hideyoshi, who had risen through the ranks from ashigaru (footsoldier) to become one of Nobunaga's most trusted generals, with the opportunity to establish himself as Nobunaga's successor. Hideyoshi eventually consolidated his control over the remaining daimyo and, although he was ineligible for the title of Seii Taishogun because of his common birth, ruled as Kampaku. During his short reign as Kampaku Hideyoshi attempted two invasions of Korea. The first spanning from 1592-1593 was only partially successful, and the second beginning in 1594 enjoyed much success until Hideyoshi's call for retreat from Korea on his deathbed in 1598.

When, in 1598, Hideyoshi died without leaving a capable successor, the country was once again thrust into political turmoil, and this time it was Tokugawa Ieyasu who took advantage of the opportunity.

Hideyoshi had on his deathbed appointed a group of the most powerful lords in Japan — Tokugawa, Maeda, Ukita, Uesugi, Mōri — to govern as the Council of Five Regents until his infant son, Hideyori, came of age. An uneasy peace lasted until the death of Maeda Toshiie in 1599. Thereafter, Ishida Mitsunari accused Ieyasu of disloyalty to the Toyotomi name, precipitating a crisis that led to the Battle of Sekigahara in 1600. Generally regarded as the last major conflict of the Sengoku period, Ieyasu's victory at Sekigahara marked the end of the Toyotomi reign. Three years later, Ieyasu received the title Seii Taishogun, and established Japan's final shogunate, which lasted until the Meiji Restoration in 1868.