Following is the third and final set of answers from Michelle and James Nevius, the authors of “Inside the Apple: A Streetwise History of New York City.” This week they will be answering questions about the history of Manhattan from Henry Hudson’s arrival in 1609 to the present. If you have ever walked by a building in the borough and wondered about its origins, or whether a historic event really took place where you think it did, or any other little-known fact, they will know the answers. Both in their book and on their guided tours, the authors try to link the history of Manhattan to places that can still be visited today. One of their goals is to focus on the patterns that emerge as a neighborhood or street changes over time.