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In page Wends:

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Wends and Danes had early and continuous contact including settlement, first and mainly through the closest South Danish islands of Møn, Lolland and Falster, all having place-names of Wendish origin[citation needed]. There were also trading and settlement outposts by Danish towns as important as Roskilde, when it was the capital: 'Vindeboder' (Wends' booths) is the name of a city neighbourhood there. Danes and Wends also fought wars due to piracy and crusading.[3]