FIVE junior politicians, chuckling away on a pleasure boat. There is only one known photo of the day, in 1985,when Belgium, Luxembourg, France, Germany and the Netherlands agreed to end border controls between their countries. It was a low-key start for what was to become one of the European Union's signature achievements. The Schengen accord, named after the Luxembourgish village nestled along the river on which it was signed, is the world's only large passport-free zone. It now covers 26 countries, including four non-EU members.
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