Commodore Matthew perry negotiated a treaty that opened which country to trade with the united states?

Agreement with Japan.

Explanation:

Matthew Perry made a treaty with Japan in 1853. It was a trade agreement that connected Japan with the Western world in terms of trade. The United States sought to draw Japan into new trade flows to profit from that trade itself. Before that, Japan had been a closed country for about 200 years that did not trade with the Western world.

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richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.