Which of the following results followed perry’s expedition to japan in 1853?
a. japan allowed the dutch to trade at nagasaki.
b. japan opened its ports to american trade.
c. japan closed its ports to all foreigners.
d. japan defeated perry’s naval forces.

north atlantic treaty organization.

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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