Answer:
Before August 1945, military leaders in Japan refused Allied requests for their surrender.
Step-by-step explanation:
Background:
Before all of this, the United States was not involved in World War 2. This was until the tragedy of Pearl Harbor. This event took place on December 7, 1941 when the Japanese bombed the naval base located at Pearl Harbor killing as many as 2,304 U.S. Personnel who were stationed at the base. This is what instigated the president of the United States at the time, FDR also known as Franklin Delano Roosevelt, to attack immediately. He described the day that Pearl Harbor happened as, "a date which we live in infamy." Soon enough, Congress declared war on Japan meaning that the United States was no longer going by the isolationism policy. This meant that they were joining WWll now. So 6 months after the bombing of Pearl Harbor, The Battle of Midway took place and this battle was the big clash between the U.S. and the Imperial Japanese Navy.
1945:
The development of nuclear science and the elements of petroleum and uranium (along with atomic bombs) where skyrocketing. The United States has devised a project to develop a atomic bomb as the Germans had already been on their way to developing it with their scientists. Lisa Meitner , who was dubbed "The Mother of the Atomic Bomb" was one of the ones who discovered the nuclear fission and the element petroleum and these were the things in the atomic bombs. After Operation Dynamo was a success and Lisa Meitner learned what was coming of her work for Germany, she stopped all contact and relation to nuclear science. The German scientists were captured and stopped in their process to make it. Fast-forwarding to America, the Manhattan project had originally been located in New York but Roosevelt decided it would be better for it to be relocated to New Mexico. This is where they developed the bombs dubbed "Little Boy" and "Fat Man". "Little Boy" contained about 141 lbs. of enriched uranium while "Fat Man" contained plutonium 239. This project was led by Robert Oppenheimer. After Roosevelt died, Truman took office and this is where it started between Japan and The USA. Now that the atomic bombs were finished and developed, Truman decided to ask Japan to surrender once and for all. After repeating this and Japan continuing to surrender, Truman finally decided to drop the first atomic bomb on the city of Hiroshima on August 6 and August 9, 1945. Out of all the destruction, 30,000 people died. Japan never surrendered after the first bomb; resulting in more death. By 1946, due to radiation and other conditions and things caused by the destruction of the atomic bomb, 40,000 had died. But in the end, Hirohito, the emperor of Japan during WWll gave up his confidence and surrendered to the United States ending WWll officially. This may have been a tragedy but it prevented many more deaths.