What should I ask Alan Taylor?

He is one of the greatest of living American historians, here is from Wikipedia:

Alan Shaw Taylor (born June 17, 1955) is an American historian and scholar who is the Thomas Jefferson Memorial Foundation Professor of History at the University of Virginia. A specialist in the early history of the United States, Taylor has written extensively about the colonial history of the United States, the American Revolution and the early American Republic. Taylor has received two Pulitzer Prizes and the Bancroft Prize, and was also a finalist for the National Book Award for non-fiction.

He has a new and excellent book out, namely American Civil Wars: A Continental History 1850-1873.  Among his other virtues, he is renowned for tying in American history to developments in Canada, Mexico, and the Caribbean.  So what should I ask him?