More than two years into the conflict the United States. Joined WWII. In the 1930’s the President of the United States, Franklin D. Roosevelt, created the Manhattan project and had a group of scientist create nuclear bombs. On July 16, …show more content…
They believed that a "house to house invasion of the Japanese mainland would produce thousands more American and Allied casualties” In 1945, late July, it was declared that the Japanese must surrender. President Truman, United Kingdom Prime Minister Winston Churchill, and the Chairman of the Chinese National Government Chiang Kai-shek issued a declaration for peace, the Potsdam Declaration, on the 26th of July 1945 (“Hiroshima”), The United States faced the realization that Japan would not come to a peace agreement. President Truman