Complex sentence: On June 1st, 1945, proposals were made to President Harry Truman, Roosevelt's successor, among these proposals, the use of a nuclear bomb against Japan as soon as possible, without warning, and settled on a target of military importance.
Split into simpler sentences: On June 1st, 1945, proposals were made to President Harry Truman, Roosevelt's successor. Among these proposals, the use of a nuclear bomb against Japan as soon as possible, without warning, and settled on a target of military importance.