The fall in traffic could signal a permanent shift in the fundamentals driving globalisation. The Port of Charleston spent most of the early 2000s enjoying double-digit growth as an accelerating wave of globalisation — fuelled by a rising China and a US consumer boom — brought robust volumes of cargo into the seaport. But those days are long gone. Jim Newsome, chief executive of the South Carolina Ports Authority, says he would be happy with 3 per cent growth in Charleston this year, a goal he concedes may be too ambitious. In January, container traffic at the port fell 5.1...