The Schengen Accord in 1985 was made between Belgium, Luxembourg, France, Germany and the Netherlands who agreed to end border controls between their countries (see Europe). The Schengen accord is named after the Luxembourg village on the Moselle river where the borders with France and Germany also meet and in which the agreement was signed. It is now [2018] the world’s only large passport-free zone and covers 26 countries, including four non-European Union members.


‘Save our Schengen’, The Economist June 23rd 2018 p.27