Answer:
The United States contributes to the end of World War II in Europe and in Pacific as given below.
Step-by-step explanation:
During World War II, the United States began to provide military supplies and support to the Allies. In the final battles in the European Theatre, American played a vital role by helping the British forces in the D-Day when Nazi Germany surrenders its armed forces in 1945, marking the end of World War II in Europe.
After the attack on the Pearl Harbour, American entered into war and tried to capture the Pacific, which was under the control of Japan. Japan saw territorial expansion in Asia and the Pacific Ocean. The purpose was to become a superpower in Asia. The victory of the Battle of Midway (in 1942) played an influential role for the United States because they stopped Japan in expanding its power in the Pacific through defeating Japanese naval power.