Treaty of Kanagawa

Treaty of Kanagawa, (March 31, 1854), Japan’s first treaty with a Western nation. Concluded by representatives of the United States and Japan at Kanagawa (now part of Yokohama), it marked the end of Japan’s period of seclusion (1639–1854). The treaty was signed as a result of pressure from U.S. Commodore Matthew C. Perry, who sailed into Tokyo Bay with a fleet of warships in July 1853 and demanded that the Japanese open their ports to...