Harry S. Truman wanted to avoid having a land invasion of Imperial Japan, because it would of killed thousands of Americans. He didn't want to surrender either, because it would make him and the country viewed as weak. He decided to bomb the two prefectures because he deemed that there was no other way to end the war as the countries would just fight repeatedly back and forth. Hope this helps ^_^' You didn't put the choices, so I just had assumed I could answer the question for myself.
