World War II was the deadliest and the largest-scale conflict the world has ever seen. Millions of people were killed on almost every continent, which essentially forced the entire world to pick sides. The US government chose to back the allies due to their long history with the French and British, and attacks by the enemy at Pearl Harbor. This article is about the impact WWII had on the US and how its government handled it to eventually win the war and emerge as a global power.
Map of Europe during WWII. Black/Grey means under the control of Germany or the Axis Powers
Before the war, President Roosevelt was already one of the most critically acclaimed presidents in the history of the US. His leadership during the Great Depression already improved his legacy, but World War II cemented it. An article by Britannica talks about how, during his lifetime, FDR was one of the most loved men in American history. He was credited with saving the nation during the Great Depression and was instrumental in the US victory during WWII (Freidel & Frank, 2025). Creating alliances with all countries opposing the Axis powers and helping rally troops from weakened countries such as France and the UK are just a few of the many examples of the President's brilliance. Britannica also states, As soon as the US joined WWII, Roosevelt took the lead and established an alliance with most of the Allied powers (Freidel & Frank, 2025). Overall, the leadership of the US during the war was a huge factor in their dominant victory against the Axis, also in turn leading to the US being a huge global power for the rest of the 20th century.
Fighting in a World War comes with multiple challenges and concerns. A nation is obligated to both care for its armed forces and also for its people back at home. This was especially an issue in the US since soldiers had to sail 100’s of miles by ship to reach the battlefield. The US government and the people back home played a huge role in their soldiers' overall success in the war. The WWII museum says, Rationing involved setting limits on purchasing certain items. The government issued certain 'points' to each person, even babies, which had to be turned in along with money to purchase goods made with restricted items. In 1943, for example, a pound of bacon cost about 30 cents, but a shopper would also have to turn in seven ration points to buy the meat (Marshall, 2018). Policies like rationing were used to ensure the army in Europe had enough food to survive. One more example is explained by Archives.gov, One journalist called it ‘the GI Bill of Rights,’ beacuse it offered aid to help veterans adjust to civilian life in medical care, homes, and especially, education. This act provided many essential supplies for a good education, such as textbooks, papers, stationery, and even transportation (Servicemen’s Readjustment Act of 1944). The result of the bill can also be found on Archives.gov, which says, by the time the G.I. Bill expired, the government had given $14.5 billion to veterans due to the act. By 1955, 4.3 million home loans had been granted, with a total value of the bill being $33 billion (Servicemen’s Readjustment Act of 1944). The G.I. Bill of Rights was implemented after the war to ensure that veterans could smoothly transition to a normal life as American citizens. The G.I. Bill was very well received and tremendously helped soldiers gain a higher education and place in a good job. The US government implemented laws and policies during the war, such as the ration bill and the G.I. Bill of Rights to help guarantee a safe transition from the end of the war onwards.
Due to the widespread destruction caused to most of Europe, the United States emerged as one of the most powerful countries in the world. With that title came huge responsibilities, especially in rebuilding all areas affected by the conflict. The US government gave aid to countries like Japan, France, the UK, and even helped rebuild Berlin and allied-occupied Germany. History.com talks about one of these plans in their article about post-WW2, the Marshall Plan was a program proposed by the US government to provide aid to Europe following World War II. It provided more than $15 billion to help finance rebuilding efforts on the continent (HISTORY.com Editors, 2025). Though the US gave substantial financial support to Europe, Japan got the most support from America due to the atomic bomb incidents in mid-1945. Navy history.com says, even if the US gave at least 15 billion dollars to Japan to rebuild, most help came in the form of food. Because of the tiny rations the Japanese government enforced on its population, most of the people had less nutrition compared the average human being living in any other nation. Japan eventually repaid all of the debt as a thankful gesture, solidifying the already improving relationship between the US and Japan (US Occupation Assistance: Japan n.d.-b). Overall, the war had caused multiple world powers to become weakened and destroyed, which led to the US to emerge as a huge power house in world politics. This came with lots of responsibility in the form of aid to most countries affected by the War. Japan and Germany got significantly more aid than others in the form of food or financial aid. This aid and rebuilding were very well received and one of the best things the US government had done at the time.
The US faced many challenges historically, with WWII being the most difficult. The war involved major nations like the UK, Russia, France, and Germany, with the US joining the Allies alongside the UK and France. Despite the victory of all Allies, the US uniquely avoided destruction and rebuilding, marking a significant success. However, this wasn’t easily achieved. From Franklin D. Roosevelt strengthening alliances to passing legislation like the G.I. Bill to support veterans, the US government demonstrated effective wartime management and leadership.
Total number of deaths demographics
Freidel & Frank. (2025, June 1). Franklin D. Roosevelt | Biography, accomplishments, New Deal, Great Depression, World War II, & Facts. Encyclopedia Britannica. https://www.britannica.com/biography/Franklin-D-Roosevelt/Relations-with-the-Allies
HISTORY.com Editors. (2025, May 28). The Marshall Plan: Definition, Date & Cold War - HISTORY. HISTORY. https://www.history.com/articles/marshall-plan
MarshallV. (2018, July 11). Rationing. The National WWII Museum | New Orleans. https://www.nationalww2museum.org/war/articles/rationing-during-wwii#:~:text=The%20government%20issued%20a%20number,points%20to%20buy%20the%20meat.
Servicemen’s Readjustment Act (1944). (2022, May 3). National Archives. https://www.archives.gov/milestone-documents/servicemens-readjustment-act#:~:text=American%20Legion%20publicist%20Jack%20Cejnar,By%201956%2C%20when%20the%20G.I.
US Occupation assistance: Iraq, Germany and Japan compared. (n.d.). https://www.history.navy.mil/research/library/online-reading-room/title-list-alphabetically/u/us-occupation-assistance-iraq-germany-japan-compared.html#:~:text=Total%20U.S.%20assistance%20to%20Japan,expected%20following%20World%20War%20II.