is David McCullough or Nick Hornby an American author?
David McCullough David Gaub McCullough ( ; born July 7, 1933) is an American author, narrator, historian, and lecturer. He is a two-time winner of the Pulitzer Prize and the National Book Award and a recipient of the Presidential Medal of Freedom, the United States' highest civilian award.
Nicholas Kralev Nicholas Kralev (born 1974) is an American author, journalist, analyst, speaker and entrepreneur specializing in international affairs and global travel. He has been particularly recognized for his work on American diplomacy and the U.S. Foreign Service.