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In page Dunkirk:

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A fishing village arose late in the tenth century, in the originally flooded coastal area of the English Channel south of the Western Scheldt, when the area was held by the Counts of Flanders, vassals of the French Crown. About AD 960, Count Baldwin III had a town wall erected in order to protect the settlement against Viking raids. The surrounding wetlands were drained and cultivated by the monks of nearby Bergues Abbey. The name Dunkirka was first mentioned in a tithe privilege of 27 May 1067, issued by Count Baldwin V of Flanders.[citation needed] Count Philip I (1157–1191) brought further large tracts of marshland under cultivation, laid out the first plans to build a Canal from Dunkirk to Bergues and vested the Dunkirkers with market rights.