This treaty opened Japanese ports to British trade and ended Japan's isolation policy, granting Britain most favored nation status.
Key Facts
- Date signed
- October 14, 1854
- Ports opened
- Nagasaki and Hakodate
- Japan's seclusion period ended
- 220 years of sakoku policy
- Parallel treaty
- Convention of Kanagawa (Japan–US), six months prior
- Status granted to Britain
- Most favored nation
Location
Cause → Event → Consequence
Japan had maintained a strict policy of national seclusion (sakoku) for approximately 220 years under the Tokugawa shogunate. The Convention of Kanagawa, signed between Japan and the United States six months earlier, had already begun dismantling this policy, creating a precedent for similar agreements with other Western powers.
On October 14, 1854, the United Kingdom and Japan, then governed by the Tokugawa shogunate, signed the Anglo-Japanese Friendship Treaty. The agreement was the first formal treaty between the two nations and mirrored the structure and intent of the earlier American convention, establishing official diplomatic and commercial relations.
As a direct result of the treaty, the Japanese ports of Nagasaki and Hakodate were opened to British vessels. Britain also received most favored nation status, placing it on equal commercial footing with other Western powers and further eroding Japan's long-standing policy of isolationism.
Political Outcome
Japan opened the ports of Nagasaki and Hakodate to British vessels and granted Britain most favored nation status, further ending Japan's sakoku isolationist policy.
Japan maintained strict national seclusion under the Tokugawa shogunate, limiting foreign access.
Japan opened select ports to British trade and accepted Western diplomatic norms, accelerating integration with global powers.