Answer:
- A comparison between two things, typically for the purpose of explanation or clarification.
- A correspondence or partial similarity.
- A thing which is comparable to something else in significant respects.
Credits go to: Google Dictionary
<span>American troops helped turn the tide of the war. Once Russia dropped out of the war in 1917 because of the Bolshevik Revolution, the Germans were able to push all of their soldiers from the Eastern Front to the exhausted Western Front where they faced decimated French and British troops. However, the timely arrival of the American Expeditionary Force under the leadership of John J. Pershing, the Allies, including America, were able to turn the tide and push the Germans back from the Western Front.</span>
When the Monroe Doctrine was written, the US had just formed and was not ready to fight the European powers. Monroe basically asked Europe to stay out of the Western Hemisphere because they were afraid of getting attacked.
The creator, James Monroe, was interested in keeping the United States out of a war it was not prepared for. Though it was out of fear, there was some thinking through; people voted on it, after all.
Note that by "afraid of getting attacked," I not only mean getting attacked through soldiers and cannons but also by taking over nearby areas and competing with the US for natural resources.