Border region along the Rhine (6)

I believe the answer is:

alsace

(Other definitions for alsace that I've seen before include "Region of France, once annexed by Prussia" , "Laces a province in France" , "French region bordering Germany and Switzerland" , "French ------ -Lorraine, was German 1872-1919" , "Riesling-producing region eastern France" .)

I've seen this clue in The New York Times.

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