In August 1914, when World War I broke out in Europe, the United States declared its neutrality in the war. The United States did not feel the need to get involved in a war that did not concern it much or worry it much. But things soon began to change in the United States. In February 1915, the German government announced that it would destroy all enemy ships in its newly declared war zone and warned the United States that its neutral ships could also be destroyed. As a result, President Wilson warned Germany that it would be held responsible if American lives were lost due to its actions. After the German attack on a French ship, Wilson threatened to end diplomatic relations with Germany if it did not stop killing innocent people. Fearing that the United States would enter the war, German officials issued the Sussex Pledge, which promised not to sink merchant ships "without warning and without saving human lives." Shortly after the Sussex commitment was made in mid-March 1917, German submarines sank three American merchant ships. On April 6, 1917, the United States declared war on Germany. The entry of the United States into the war brought greater advantage to the Allies, leading Germany and the other two Central Powers to their defeat. According to Document 1, the Allies borrowed $10.5 billion from the United States before it even got involved in the war. The United States also manufactured and shipped war materials to the Allies according to their specifications. In this way, the Allies were very dependent on support from the United States. And because the United States was willing to help the Allies before they even entered the war, the Allies already had a great advantage.D...... middle of paper ...... in 1918 This ultimately led to the Treaty of Versailles signed by Germany on June 28, 1919. The treaty required Germany to completely disarm its military forces and pay reparations to the Allies. The treaty also made Germany take full responsibility for starting the war. Although the treaty did not follow all of President Wilson's 14 points for world peace, it did include some and agreed to the creation of a League of Nations. I strongly believe that if the United States had not entered the war, Germany would have won and ultimately taken control of the Allied countries. If this had happened, Germany could have conquered the entire world. Overall, I guess it's safe to say that it's a good thing that the Allied countries had the upper hand in the war. If the United States had not entered the war, who knows what things would be like today ??