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Deshima, also known as Dejima, was a small, artificial island in the harbor of Nagasaki, Japan. During Japan's period of national seclusion, known as sakoku, which began in the 1630s, Deshima served as the sole location for limited trade with the Dutch and Chinese. This policy, enforced by the Tokugawa shogunate, aimed to isolate Japan and prevent the spread of Christianity. While most foreigners were banned, the Dutch were confined to Deshima, with strict controls on their movements and trade. This isolation lasted until the mid-19th century when Japan was forcibly reopened to foreign powers.12

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