“Schengen area”, after the treaty to create it, which was signed in the Luxembourg town (https://en.wikipedia.org/wiki/Schengen_Area https://en.wikipedia.org/wi

“Schengen area”, after the treaty to create it, which was signed in the Luxembourg town (https://en.wikipedia.org/wiki/Schengen_Area https://en.wikipedia.org/wiki/Schengen_Area)