First, I should make it clear that I am not a historian - only an average reader who likes reading about history. This book traces the control of North American territory from the arrival of Europeans until 1871 when Britain and the U.S. finally settled all conflicting claims. The author argues against American Exceptionalism - from my reading of it, he did this mostly by pointing to the many times at which things could have very easily turned out very differently from how they did. As an American who is more familiar with American history than European history, I found this idea very interesting. For example, from the book's conclusion: "...the North American Question depended to a greater extent on European power politics and the views of European powers than is sometimes appreciated, notably in American public myth. Thus, Spain's collapse under Charles IV, particularly during the Napoleonic occupation of 1808-1813, was highly important to America as Spain bordered it to the south and west. Crucially, American expansionism was helped by the extent to which the Question was usually a secondary one for European powers, a point that does not generally emerge in studies of bilateral relations which, necessarily, tend to exaggerate the importance of this bilateralism."
I recommend this book to people interested in history who don't mind a pretty dense, heavy read. I think it should be particularly eye-opening for non-historian Americans whose knowledge of U.S. history is based largely on "public myth".