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Author: WikiMatrix
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English[en]
They would further build fortified log (later brick and stone) castles along major rivers and the Vistula Lagoon to serve as basis for future expansion.
Chinese[zh]
他们会沿着主要河流和维斯图拉泻湖修建加强的木堡(后来则用砖石建造),作为进一步扩张的根据地。