In the second half of Edo Period, the Edo bakufu (Japanese feudal government headed by a shogun) concluded a commercial treaty in 1859 with each of the countries which had frequently come to nationally isolated Japan by the sea to request commerce and diplomatic relations (that is, the United States of America, Russia, the Netherlands, England, and France), and those treaties were called the Treaty with the Five Countries in Ansei Era.
江戸時代後期に、たびたび日本へ来航して鎖国を行う日本に通商や国交を求める諸外国に対し、江戸幕府は1859年（安政6年）に安政五カ国条約（アメリカ合衆国、ロシア、オランダ、イギリス、フランスとの通商条約）を結ぶ。