The administration of which president is credited with opening Japan to

trade with the United States?

(A) James Polk

(B) Millard Fillmore

(C) Franklin Pierce

(D) James Buchanan

(E) Zachary Taylor

It was the administration of "Millard Fillmore" that is credited with opening Japan to trade with the United States, since trade with Asia in general was seen as being a major advantage to the United States during this time.