We see everything from the narrator's point of view, so exposition about the world is limited to what impinges directly on him and the story he's telling. Considering how old the world is, we learn very little about its history, which I think is a good thing.
Neal StephensonI try to find a style that matches the book. In the Baroque Cycle, I got infected with the prose style of the late 17th and early 18th centuries, which is my favorite era. It's recent enough that it is easy to read - easier than Elizabethan English - but it's pre-Victorian and so doesn't have the pomposity that is often a problem with 19th-century English prose. It is earthy and direct and frequently hilarious.
Neal Stephenson