What was the policy adopted by the united states government after years of isolationism?

Isolationism refers to America's longstanding reluctance to become involved in European alliances and wars. Isolationists held the view that America's perspective on the world was different from that of European societies and that America could advance the cause of freedom and democracy by means other than war.

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answer; (d) one tectonic plate plunges beneath another; (most common,convergent boundaries)

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