Three and a half decades after reunification, a line runs through Germany where the Iron Curtain once stood. Instead of barbed wires and dogs, that line now divides Germans by measures like income and unemployment — and increasingly by the…

Three and a half decades after reunification, a line runs through Germany where the Iron Curtain once stood. Instead of barbed wires and dogs, that line now divides Germans by measures like income and unemployment — and increasingly by the…