Explain how the United States was able to defeat the Japanese in the Pacific.
The only reasons why was because of when America nuked Hiroshima. I'm assuming you're talking about WWII
The unites state used the tactic "island hopping" being they would take over one island at a time. Although this was a very cost full maneuver, it proved to be quite effective. But during 1945 when American scientists realized they can split atoms they had launched two nuclear strikes on the Japanese cities of Nagasaki and Hiroshima. The emperor of Japan had surrendered bitterly.