Crossword Genius

Historic region of north-west Europe, scene of prolonged battles in WWI (8)

Ross

I believe the answer is:

flanders

(Other definitions for flanders that I've seen before include "Medieval principality, now part of Belgium, the Netherlands and France" , "Belgian region" , "Low Countries region; -- and Swann" , "French/Belgian region" , "Area of the Low Countries" .)

I've seen this clue in The Guardian.
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