Pre order the fascinating exploration of Britain's ever-changing identity.________Can the questions over Britain's future be answered by maps of our past?What is Britain? How did our nation get to be the shape that it is? And will those borders change? Not long ago, these questions were rarely posed, as it felt as though Britain's borders were an immutable fact, the bedrock upon which British culture could stand forever.But after the Scottish and Brexit referenda we discovered that British identity is more fragile than we ever believed.