Award-winning author K. M. KOSTYAL has written nearly 20 books on history, music, world cultures, and wars. Her most recent works for National Geographic include Founding Fathers: The Fight for Freedom and the Birth of American Liberty; George Washington's Rules to Live By; Christmas in Williamsburg; Lost Boy, Lost Girl: Escaping Civil War in Sudan; and Great Migrations, the companion book to the National Geographic Channel's acclaimed series on animal migration.