Tokugawa Iesada

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Tokugawa Iesada (徳川 家定 (May 6, 1824—August 14, 1858) was the 13th shogun of the Tokugawa shogunate of Japan who held office for only 5 years, from 1853 to 1858. He was mentally unfit to be shogun^{[citation needed]}. Having risen to power soon after the Black Ships episode, which was allegedly the cause of his father Ieyoshi's illness and death, he was responsible for the Unequal Treaties (Convention of Kanagawa, Anglo-Japanese Friendship Treaty, Harris Treaty, Anglo-Japanese Treaty of Amity and Commerce) which broke the sakoku and opened the Japanese frontiers to foreign influences, leading to the Bakumatsu.

Preceded by Tokugawa Ieyoshi

Tokugawa Shogun 1853-1858

Succeeded by Tokugawa Iemochi