The Open Door Policy is violated if the United States were to annex Cuba following a conflict between the two countries. Hence, option C is correct.
The Open Door Policy is the introduction of the policy in the year between the 1889 and 1990 in the United States. It was created to prevent to the china for equal trading by all the countries.
The open door policy is not a good success policy by the US as China do not get interaction between the countries.
Thus, option C is correct.
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