Answer: It contributes that the Japanese Empire at the time abandoned us and went to the other side we were going to war with, which resulted in the U.S bombing them and the Japanese said they would not stop until they were down to their last man, so what the U.S did in response was bomb the Japanese Empire twice in total because of what they said, and then the Japanese surrendered. The biggest reason they were at odds was that the Japanese requested China after World War I, and the Japanese believed that by assisting, they would be able to obtain China in the first World I.