There are entire libraries of books written about the American Civil War.
But Pulitzer Prize winning historian Steven Hahn ranges far afield in time and space for his latest book, A Nation Without Borders: The United States and Its World in an Age of Civil Wars, 1830-1910.
The book details the wrenching shift from an agricultural nation with legal slavery to an industrial power taking a prominent place on the world stage. Stephen Hahn's visit falls almost exactly on the anniversary (November 19) of the Gettysburg Address.
