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Provinces of the Kingdom of Prussia

  • East PrussiaIn the 13th century, Duke Konrad I of Masovia invited the Teutonic Knights to conquer the native Old Prussians. These crusading orders established a monastic…
  • West PrussiaIn 1308, the monastic state of the Teutonic Knights invaded Pomerelia under a false pretext. They claimed to help King Władysław I Łokietek quell a rebellion…