The impact of the United States joining the war was significant. The additional firepower, resources, and soldiers of the U.S. helped to tip the balance of the war in favor of the Allies. When war broke out in 1914, the United States had a policy of neutrality.
Following World War II, the United States hoped to avoid further entanglement with European politics that had drawn us into war. A strong isolationist sentiment developed that questioned the wisdom of our entry into The Great War as it was then known. However, the rise of military government in Germany, Italy and Japan and their invasions of neighboring countries became a major concern for United States leaders including President Franklin Delano Roosevelt.
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I think the answer is true cause The us only had one attack on their country pearl harbor so we didn't have much home damage but overseas all the battling was there Mostly British bases and towns and soldiers was lost so they lost more power than the us <span />