Can we mine the past for clues that explain the present? That's the central theme of many history books in 2018, as writers and historians, academic and popular alike, attempt to uncover and recount the stories that say something about the state of the world today. From a biography of one of America's most important architects to a sprawling analysis of Shakespearean drama to a 19th century sex scandal that shocked Washington, our favorite books this year are ones that bridge the gap between where we've come from and where we're going.