What is the nuance difference between "go on to become" and just "become"?
To "go on" normally expresses a continuation of time. So to "go on to become" emphasizes the process of becoming something, and implies that it was not immediate but happened eventually over a long process and continuation of time. To "become" does not have this same emphasis of a long process of becoming something. Ex: She went on to become a well-known doctor. Ex: He became the president. In the first example, "went on to become" implies that she had a long process involved in becoming a doctor and she was at a far lesser status than a doctor before she came one. It also indirectly implies that there was a lot of hard work involved in the process.