Treaty of Amity and Commerce (jap. 日米修好通商条約 Nichibei Shūkō Tsūshō Jōyaku) pomiędzy Stanami Zjednoczonymi a Japonią został podpisany w Ryōsen-ji w Shimoda 29 lipca 1858. Główne zapisy to otwarcie portów Edo i czterech innych japońskich miast dla amerykańskiego handlu oraz przyznanie cudzoziemcom eksterytorialności.

The treaty followed the 1854 Convention of Kanagawa, which granted coaling rights for U.S. ships and allowed for a U.S. Consul in Shimoda. Although Commodore Matthew Perry secured fuel for U.S. ships and protection, he left the important matter of trading rights to Townsend Harris, another U.S. envoy who negotiated with the Tokugawa Shogunate; the treaty is therefore often referred to as the Harris Treaty. It took two years to break down Japanese resistance, but with the threat of looming British demands for similar privileges, the Tokugawa government eventually capitulated.

The most important points were:

• exchange of diplomatic agents
• Edo, Kobe, Nagasaki, Niigata, and Yokohama’s opening to foreign trade as ports
• ability of United States citizens to live and trade in those ports
• a system of extraterritoriality that provided for the subjugation of foreign residents to the laws of their own consular courts instead of the Japanese law system
• fixed low import-export duties, subject to international control

The agreement served as a model for similar treaties signed by Japan with other foreign countries in the ensuing weeks. These Unequal Treaties curtailed Japanese sovereignty for the first time in its history; more importantly, it revealed Japan’s growing weakness, and was seen by the West as a pretext for possible colonisation of Japan. The recovery of national status and strength became an overarching priority for the Japanese, with the treaty’s domestic consequences being the end of Bakufu (Shogun) control and the establishment of a new imperial government.

Perry's expedition to Japan was directly linked to the notion of manifest destiny, in which Americans had a "God-given" right to spread their political institutions and commerce across the North American Continent.Szablon:Ref The role of Japan in particular was that of a base of commerce between China and the United States. According to Secretary of State Daniel Webster, God had placed coal for steam ships and other trading vessels "in the depths of the Japanese islands for the benefit of the human family."Szablon:Ref

The Convention of Kanagawa mediated by Commodore Perry was a primary step to a rather forced extension of American influence in Japan. However, most problems that the Tokugawa Shogunate faced came from a division within the country between those who favored opening to the West immediately (kaikoku) and advocates of joi ("expel the barbarian") who favored a preservation of Japanese culture and influence until Japan could face the military threat posed by the West.Szablon:Ref Most Japanese were familiar with the subjugation of Chinese trade by the British after the Opium War of 1840, but they were divided on how and when they would inevitably open their ports. Both camps did agree that trade should be handled by Japanese going overseas instead of foreigners coming into Japan and violating the country's seclusion laws. Many of those Tokugawan officials who agreed to the Treaty of Kanagawa did so in an effort to avoid war with the United States or Britain.Szablon:Ref The result was a deepening domestic crisis; after 1858, the Shogunate was trapped between the demands of the West and its powerful domestic enemies.

However, Townsend Harris' terms were much more demanding than Perry's. Harris claimed that the laws of Japan were "very peculiar" and it would be unfair for foreigners to live under such rule.Szablon:Ref Article III of the treaty gave Americans the right to trade and reside in Yedo (Tokyo) and Osaka without influence from the Japanese government; the treaty also allowed for consular jurisdiction in those cities opened to American trade, the free export of Japanese gold and silver, and a conventional tariff. The entrance of foreigners to the port of Edo, the shogunal capital, and the placement of an official from a foreign government in proximity to the Emperor was threatening, even to those who supported opening to the West publicly.Szablon:Ref These demands in particular demonstrated the United States' planned role for Japan; there was to be freedom of trade, allowance for an influx of Americans, (but no expectations of Japanese coming to the United States), no interest in military concerns, and religious toleration of Japanese tradition. It was merely a link in a chain of commerce that would connect North America to China.

Harris' emphasis (and threat) of the inevitable defeat of the resisting Japanese by the British and the French was enough to convince many of the kaikoku members of the Tokugawa Shogunate to agree to the terms of the United States, no matter how unfavorable they were. The memory of China's overwhelming defeat was too close to be ignored.Szablon:Ref

After reluctantly accepting the Harris Treaty, Japan quickly signed similar treaties, called the Ansei Treaties, with Russia, France, Great Britain, and The Netherlands. This process was hastened by the outcome of the Arrow War in 1858 in which the Chinese were once again soundly defeated by the British and the French. Harris also suggested that Japan sign "honorable treaties" before the allied Anglo-French fleet would sail to Japan and coerce the signing of "unequal treaties." However, the content of those treaties did not differ in their most essential points from the Tientsin Treaty between Great Britain and China in 1858; one of the most prominent of the unequal treaties in the history of Eastern-Western foreign relations.Szablon:Ref

The Treaty was ratified through the visit of the first Japanese Embassy to the United States in 1860.

• Hotta Masayoshi
• Convention of Kanagawa
• Gaikoku bugyō

• Szablon:Note Walter LaFeber, The Clash, (New York; Norton & Co., 1997), 9.
• Szablon:Note Ibid, 10.
• Szablon:Note Conrad Totman, “From Sakoku to Kaikoku, The Transformation of Foreign-Policy Attitudes, 1853-1868,” Monunmenta Nipponica, 30, 2.
• Szablon:Note D. Y. Miyauchi, “Yokoi Shonan’s Response to the Foreign Intervention in Late Tokugawa Japan, 1853-1862,” Modern Asian Studies, 4(1970), 272.
• Szablon:Note John McMaster, “Alcock and Harris, Foreign Diplomacy in Bakumatsu Japan,” Monunmenta Nipponica, 22(1967), 308.
• Szablon:Note Totman, Sakoku, 3.
• Szablon:Note Miyauchi, Yokoi, 276.
• Szablon:Note Shinya Murase, “The Most-Favored-Nation Treatment in Japan’s Treaty Practice during the Period 1854-1905, ” The American Journal of International Law, 70 (Apr. 1976), 280.

Anderson, David L. “Matthew C. Perry.” American National Biography Vol. 17. New York, New York: Oxford 1999, p. 367-369.

Griffis, William Elliott. Townsend Harris: First American Envoy in Japan. Cambridge, Massachusetts: Cambridge University Press, 1895.

Heine, William. With Perry to Japan. Honolulu, Hawaii: University of Hawaii Press, 1990.

LaFeber, Walter. The Clash. New York, New York: Norton & Co., 1997.

McMaster, John. “Alcock and Harris, Foreign Diplomacy in Bakumatsu Japan.” Monunmenta Nipponica, Vol. 22 No. 3-4 (1967), p. 305-367.

Miyauchi, D. Y. “Yokoi Shonan’s Response to the Foreign Intervention in Late Tokugawa Japan, 1853-1862.” Modern Asian Studies. Vol. 4 No. 3 (1970) p. 269-290.

Murase, Shinya. “The Most-Favored-Nation Treatment in Japan’s Treaty Practice during the Period 1854-1905.” The American Journal of International Law. Vol. 70 No. 2 (April 1976, p. 273-297.

Totman, Conrad. “From Sakoku to Kaikoku, The Transformation of Foreign-Policy Attitudes, 1853-1868.” Monunmenta Nipponica. Vol. 35 No. 1, p. 1-19.

Totman, Conrad. The Collapse of the Tokugawa Bakufu 1862-1868. Honolulu, Hawaii: University Press of Hawaii, 1980.

Schroeder, John H. Matthew Calbraith Perry: Antebellum Sailor and Diplomat. Annapolis, Maryland: Naval Institute Press, 2001.

• The United States-Japan Treaty of Amity and Commerce, 1858 (partial text)