Respuesta :
D. Monroe Doctrine is your answer
The Monroe Doctrine states that as long as Europe keep out of affairs within the western hemisphere (the Americas), the US would keep out of European affairs. It also demands that Europe cut off all spheres of influence that is located within the Western Hemisphere (W.H. for short), and that all attempts from Europe to reclaim colonies or control the W.H. would be considered an aggression and a act of war.
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The correct answer is D. Monroe Doctrine.
With concerns about Spain reclaiming the Western territories, President Monroe signed in 1823 four major points:
The U.S. would not get involved in European affairs, not interfere with existing European colonies, no other nation could start a new colony in the Western Hemisphere and finally, if a European nation interfered with a nation in the Western Hemisphere, the U.S. would treat as a hostile act against this nation.