To which policy does the text refer

under this policy, the united states claimed “international police power” in the western hemisphere

The Roosevelt Corollary Policy is the correct answer.

The Roosevelt Corollary, articulated by President Theodore Roosevelt, was an expansion to the Monroe Doctrine. This policy stated that the nations of the Western Hemisphere were not open to European colonization. And, also, in order to keep life and property in those areas safe, the United States would interfere and have the responsibility to maintain order.  

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