If you’d been born 2,500 years ago in southern Europe, you’d have been convinced that the Roman empire would last forever. It had, after all, been around for 1,000 years. And yet, following a period of economic and military decline, it fell apart. By 467 CE it was gone. To the people living under the mighty empire, these events must have been unthinkable. Just as they must have been for those living through the collapse of the Pharaoh’s rule or Christendom or the Ancien Régime.
The subsequent movement of people across Europe – EU member states received 1.2 million first-time asylum applications in 2015 – sparked a political and humanitarian crisis, the ramifications of which are still unfolding. It certainly contributed to the United Kingdom’s decision to leave the EU. But 1.2 million people is a trickle compared to what’s coming. Exact numbers are hard to come by, and notoriously broad, but according to some estimates as many as 200 million people could be climate-change refugees by the middle of the century. If the EU struggles to control its borders when 1.2 million people move, what would happen if 200 million do? The lesson of history – real, long-lens human history – is that people move, and when they do, it’s hard to stop. Link