When the United States and demanded a treaty permitting trade and the opening of Japanese ports to U.S. merchant ships. This was the era when all Western powers were seeking to open new markets for their manufactured goods abroad. (28 dic 1853 anni – 2 feb 1858 anni)
Descrizione:
 http://afe.easia.columbia.edu/special/japan_1750_perry.htm 
Aggiunto al nastro di tempo:
Data:
28 dic 1853 anni
2 feb 1858 anni
 ~ 4 years