Answer:The United States’ entry into World War I was a major turning point in the war. It allowed the Allies to gain an upper hand in the war, due to the improved mobilization of troops and resources they could now access. It also provided a much needed morale boost, as the Allies could now rest assured that they had a major superpower on their side. The U.S’s involvement also increased the pressure on Germany, as they would now have to face more forces in battle.The United States' entrance into World War I in 1917 provided an immediate benefit to the Allied Powers, as it was a major injection of resources, manpower, and morale. With the US joining the fight, the Allies were able to continue their offensive in Europe, pushing the Central Powers back on multiple fronts. Without the US joining the Allies, it is highly likely that the Central Powers would have been able to score a decisive victory in 1917. The resources, manpower and training provided by the US allowed the Allies to gain an important advantage in the war, allowing them to focus on other areas of the war effort.When the United States entered World War 1, the Allies were immediately bolstered by the addition of a powerful, well-equipped military force. The U.S was well-positioned to provide much-needed supplies and reinforcements to the Allied Forces. This influx of resources, when coupled with the U.S's unprecedented commitment to the war effort, provided a major boost to the Allies' morale and their chances of success. The U.S provided more than just resources; they also brought a renewed sense of hope and determination as they joined forces with their Allied counterparts.The entry of the United States into World War I brought many advantages to the Allied forces. One of the most immediate advantages was that it greatly increased the manpower of the Allied forces, which improved the odds of victory. Furthermore, the U.S. brought its advanced industrial capabilities to the war effort, which provided a critical edge in armaments and supplies. Additionally, U.S. participation in the war provided a morale boost to the other Allied forces and made them feel more confident in their ability to achieve victory.