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Why did the Tokugawa shogunate agree to open Japan to foreign trade?

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The emperor Meiji — Meiji Restoration After the overthrow of the Tokugawa shogunate, the Meiji emperor became the formal head of a new imperial government under whose reign Japan was transformed from an isolated feudal society into a modern, industrialized global power.

The Tokugawa shogunate’s decision to end Japan’s long-standing policy of isolation, known as sakoku, was primarily driven by the overwhelming military pressure exerted by the United States and the shogunate's inability to mount an effective defense.12

In 1853, U.S. Commodore Matthew C. Perry arrived in Tokyo Bay with a fleet of warships, demanding that Japan open its ports for supplies and trade. The shogunate, already facing significant financial constraints, recognized that its existing armaments were no match for the technologically superior Western naval forces. Furthermore, Japanese officials were acutely aware of China’s recent defeat by Western powers during the Opium War, which served as a stark warning of the consequences of resisting Western encroachment.132

Ultimately, the shogunate agreed to sign the Treaty of Kanagawa in 1854 as a strategic measure to stall for time while attempting to improve its defenses. This concession, however, severely weakened the shogun's authority and contributed to the eventual collapse of the shogunate in 1867.314