The Hiroshima atomic bomb incident refers to the atomic bomb that the United States threw in Hiroshima, Japan on August 6, 1945, at the end of the Second World War.

In the summer of 1945, Japan’s defeat was confirmed, but Japan’s crazy resistance in places such as Okinawa led to the death of large number of Allied officers and soldiers. For the protection of the life of the Allied officers and soldiers, Japan was suppressed by the Soviet Union, US President Truman and the military to surrender unconditionally, therefore, Senior officials decided to throw an atomic bomb on Japan to speed up the end of the war.

The US military selected cities such as Tokyo, Kyoto, Hiroshima, Nagasaki, Ogura, and Niigata as alternative targets for throwing atomic bombs. Earlier, the United States, Britain and the Republic of China issued the Potsdam Proclamation, urging Japan to surrender. On July 28, the Japanese government refused to accept the Potsdam Proclamation.

On August 6 and 9, the US military threw atomic bombs at Hiroshima and Nagasaki, causing a large number of civilian and military casualties.

On August 15th, Emperor Hirohito of Japan issued a certificate to announce Japan’s unconditional surrender.

Dropping the bomb was one major plan of the Manhattan Project. Though Manhattan Plan was a controversial plan, it still engaged the most outstanding scientists in the world, including the American military. This plan was established in order to cope with the threaten post by Germany that German scientists were working on a destructive atomic weapon. However, America turned the target to Japan after Germany surrendered as the Japanese military used radical methods like suicide attack and self-sacrifice for winning the war. Before dropping the atomic bomb from the air of Japanese territory, Japanese troops and some of the pilots who participated in this task had never realized that the atomic bomb was so destructive.

The intense light waves of the atomic bomb explosion blinded thousands of people; the high temperature of more than 6,000 degrees turned everything into ashes; the radiation rain caused some people to slowly die in the next 20 years; the wind of shock waves, Destroy all the buildings. People and things under the influence of the blasting poles fall apart like atomic separation. A little further away from the center, you can see the wreckage of men and women and children who were burned in a while. Farther away, some people are still alive, but they are not severely burned, or their eyes are burned into two holes. At a distance of 16 kilometers, people can still feel the hot air.

Leukemia is a type of malignant clonal disease of hematopoietic stem cells. Clonal leukemia cells proliferate and accumulate in bone marrow and other hematopoietic tissues due to uncontrolled proliferation, differentiation disorders, and blocked apoptosis, and infiltrate other non-hematopoietic tissues and organs, while inhibiting normal hematopoietic function. Clinically, varying degrees of anemia, hemorrhage, infection, fever, and swelling of the liver, spleen, lymph nodes, and bone pain can be seen.

Malformation is a serious abnormality of some organs caused by defects in the structure and function of the human body during embryonic development.

Tens of thousands of people have died from cancer caused by nuclear dust radiation.

Clean air, water, and sunlight are the three basic elements that support the entire ecosystem, and they are a gift from nature to humans. The outbreak of nuclear war will bring catastrophic changes to these factors. The huge heat radiation generated by the explosion of nuclear weapons will dramatically increase the temperature of the air to 30,000 °C, which will not only eliminate all life that may escape in the effective range, but also deplete the moisture in the air and emit a large amount of toxic gases. If the target is nuclear power plants, large chemical companies, oil fields, large oil tankers and other facilities, bombing will cause a large amount of toxic chemicals, soot and carbon oxides to be emitted into the air, seriously polluting the air, soil and water in the adjacent areas; if the target is hydropower stations, large Important ecological facilities such as reservoirs will cause flooding and cause systematic ecological disasters. The nuclear explosion also sent a large amount of nuclear soot and nuclear dust into the stratosphere, so that the sunlight was reflected for a long time, so that a considerable proportion of sunlight could not enter the surface of the earth. On days without sunlight, the average temperature of the ground would also drop significantly. When the equivalent of nuclear weapons grows larger and breaks through a certain level, it will cause "nuclear winter."

The drop of the atomic bomb on Hiroshima saved allied army of the United States. If the allied army of the United States entered the mainland of Japan, more battles would be expected to happen. Young Americans will still be sent to the battleground, the weapons would still be produced in the factory. and people would die under the ballets and the bombs. The Philip et al. (2016) states that if the war kept on going, American army would attack the mainland of Japan, which would not only stretch the duration of the war, but also create more sacrifices on the battleground. At that time, the Japanese military was in a radical margin. They used radical ways to fight against American military like suicide attacks. For instance, the Japanese pilots would drive their combats aircrafts directly to the American warship and crushed them without caring about sacrificing. The only way to stop this was to drop the atomic bomb and awoke the fear of Japanese government. According to the article The Strange Myth of Half a Million American Lives saved (Rufus et al,. p 121-140, 1985), for a more detailed assessment of the plan's allied forces, US Army Secretary estimated that if he landed in Japan, there would be about 400,000-800,000 soldiers die in the war because Japanese army would attack them without considering their own loss. Churchill said that it would be 1 million. Also Rufus et al(1985) demonstrated that the Potsdam Declaration made a great decision of dropping the atomic bomb, which cancel the original plan for batting in Japanese mainland. People’s lives were saved, and the Potsdam Declaration pushes American’s opinion to morality again because it reduced unnecessary sacrifice.

These two atomic bombs (one in Nagasaki) let the war ended one year ahead of schedule, saving the lives of countless American soldiers who should have been bloody in Japan or the Pacific and Japanese troops. They have also saved the lives of countless Japanese people under Japanese rule. If the war is over one day later, more comrades will die under the guns of the Japanese. And at that time, the Japanese military was in a radical margin. They used radical ways to fight against the American military like suicide attacks. They threw their lives aside and put all of their beliefs in their nations and the emperor. Therefore, it was scary if people suicide in order to be honored and remembered by the country. The only way to stop this was to drop the atomic bomb and awoke the fear of the Japanese government.

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