When Tokugawa Iemitsu banned foreign travel in 1633, which country maintained trade with Japan?

The choice of the Dutch as the country that maintained trade with Japan after Tokugawa Iemitsu's ban on foreign travel in 1633 is accurate because the Dutch were able to continue their trading relationship through a unique arrangement. Unlike many other foreign entities, the Dutch followed the rules set by the Tokugawa shogunate and were willing to operate under strict regulations.

The Dutch were allowed to trade through a single port, Nagasaki, where they established a trading post on a small man-made island called Dejima. This arrangement enabled them to engage in commerce while adhering to the shogunate's policies, which were aimed at controlling foreign influence and limiting direct interactions with foreign cultures, particularly Christianity, which was seen as a threat to the shogunate's authority. The isolationist policies of Japan at this time strongly favored trade that did not challenge the existing social and political order, and since the Dutch did not attempt to convert the Japanese to Christianity, they were granted a special status.

Other countries like Spain and Portugal did not maintain the same level of engagement due to their missionary efforts and the shogunate's distrust of Catholicism. China was an important trading partner, but the question focuses on the persistent commercial relationship maintained under the specific circumstances