What is the fine-grained topic of the following text: His knowledge of shorthand, his political connections through Montagu (now Earl of Sandwich and First Lord of the Admiralty, having brought the King back from exile), and his subsequent government post as one of the principal clerks of the Royal Navy administration, gave him power and moderate wealth. Only return the topic.
A man's rise to power and wealth through political connections and a government post in the Royal Navy administration.