Which of these describes an accomplishment of commodore matthew perry?
a. he led the allied forces in the invasion of normandy.
b. he opened trade relations with japan in 1853.
c. he represented the united states at the league of nations.
d. he developed a plan for rebuilding germany after world war ii.

 The correct answer is : B. He opened trade relations with Japan in 1853.

Explanation:  Perry broke Japan's international isolation and forced it to open to other foreign countries, such as the United States. President Fillmore sent him to Japan to negotiate a trade treaty since Japan had not had relations with any country for many years, finally Japan signed a treaty with the United States of friendship, peace and trade.

a

explanation:

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d) in the state of iowa