Blink once; you now have an idea of the amount of time that’s elapsed between an atomic bomb detonating and the instantaneous death of thousands of people. This is the sheer amount of power the U.S. had in their hands with the development of the atomic bomb. The need to construct such a diabolical weapon in the first place was important to the United States for they were concerned about Nazi Germany’s advancements in the technological field early on in World War 2. Once the U.S. had gone through the process of creating a functional atomic bomb, the question then became should they drop the bomb on Japan or not. President at the time, Harry S. Truman, and countless other government officials had to tackle these difficult questions while considering the ethical and sensible side of things before making the decision on which was best for both the country and the nation. Altogether, the brutal conflict in the Pacific led President Truman to an incredibly tough decision between war and ethics; Where in the end he chose to save countless American and allied lives by dropping two atomic bombs on Japan, which led to the end of World War 2, at the costly expense of thousands of innocent Japanese civilians.Before World War 2, in 1937, the Japanese were already looking for trouble as they desperately searched for a reason to begin a full scale invasion of China. Japan knew that they were a small island country that needed to conquer others in order to expand their own empire and capture the key resources they lacked on their mainland. So in the summer of 1937 they began military training exercises near the Marco Polo Bridge, which is located outside of what is known today as Beijing, preparing for an invasion. On July 7th they commenced their training but without notifying the local Chinese guards, which they normally did. This caused the guards to act as if the Japanese were actually attacking and they fired a few stray bullets in their direction with the Japanese retaliating by returning fire. Amongst all the confusion the Japanese claimed to have a lower ranked officer go missing and demanded they cross over the bridge to look for him. The Chinese declined to let them cross and said they would conduct the investigation on their own. A few Japanese infantry troops then tried to push their way across but they were driven back by the Chinese guards. With things escalating rapidly both signaled for reinforcements. The next day, the Chinese let two Japanese officials into the town to look for the missing private but as soon as they crossed the Japanese reinforcements stormed in behind them with tanks and four mountain snipers. But this was all for not as the Chinese were able to regain complete control over the bridge by the afternoon of July 9th. The two sides then negotiated on a peace agreement for two days and signed it on July 11, 1937. The terms included China taking blame for the incident, responsible personnel being punished and Japan having to retreat from the area near the Marco Polo Bridge. Things then calmed down for a few days but then by the end of July both were in violation of the peace agreement and fully engulfed in all out warfare. This increased tension and conflict between China and Japan was unsettling to the United States at the time because any territory taken from China by the Japanese Empire would grow their power exponentially due to the utter amount of resources found there.As time passed by World War 2 raged on ferociously, and the United States had to respond to the actions of the Axis powers. So, on March 11, 1941 President Franklin D. Roosevelt began the Lend-Lease Program which loaned arms and other military defense materials to allied countries in need. This helped the allies fend off the axis powers for a little while longer while also kept the U.S. out of the war. Other measures were also taken to weaken the axis powers by the U.S. while they sat on the figurative sidelines of World War 2 for on June 14, 1941 the U.S. froze German and Italian assets. This prevented citizens of those countries from withdrawing money invested in the American government. Ten days later the U.S. did the same for Japan but the impact was much greater. It cost Japan 75% of their trade and 88% of their oil imports. This was devastating to the Japanese because they were much more involved in the war at this point in time than the United States was and needed all the money and oil they could get to keep their machines running. Soon after having their assets froze Japanese Admiral Isoroku Yamamoto began planning the attack on Pearl Harbor. He partially wanted to get back at the U.S. but more so wanted to be able to conquer Southeast Asia without interference and saw them as the one that would interfere with their plans. He believed that they would be caught so off guard by the attack that the entire countries moral would be completely destroyed allowing them to move through Southeastern Asia uninhibited.