黑船來航
In 1853 Commodore Matthew Perry led the Perry Expedition, a squadron of four ships which sailed to Japan to establish normal relations with Japan. Perry's two technologically advanced steam-powered ships and calm, firm diplomacy convinced Japan to end three centuries of isolation and sign the Treaty of Kanagawa with the U.S. in 1854. Nominally a treaty of friendship, the agreement soon paved the way for the opening of Japan and normal trade relations with the United States and Europe.