How did Tokugawa Ieyasu respond to Portuguese, Dutch, and English requests for trade?

Tokugawa Ieyasu actively welcomed trade requests from the Portuguese, Dutch, and English, viewing international commerce as a valuable opportunity to acquire firearms, generate commercial profits, and gain general information.1

To facilitate and control this trade, Ieyasu implemented several strategic measures:

• Trade Monopoly: He aimed to establish a bakufu (shogunate) trade monopoly, notably by creating a system for the purchase of imported Chinese silk, which allowed him to reap significant profits by securing a preferential portion of the goods before they reached merchant guilds.2
• Licensing: He protected and encouraged trade with southern regions by granting special licenses known as shuin-jō ("red-seal licenses") to oceangoing merchant ships.2
• Diplomatic Relations: Ieyasu utilized the expertise of the English navigator William Adams, whom he appointed as a trusted advisor and retainer. Adams helped facilitate communication with foreign traders and encouraged Dutch and English merchants to visit Japan, eventually assisting in the establishment of an English trading post at Hirado in 1613.3

While Ieyasu was initially tolerant of Christian proselytization to secure these economic benefits, he eventually grew wary of the religious and political influence of missionaries. By 1612, he began taking steps to prohibit missionary activity, setting a precedent that his successors would eventually expand into the policy of national seclusion, or sakoku.12