1138-1320 CE
From 1138 to 1320 CE, the Polans endured their longest trial — Bolesław's testament shattering their realm into squabbling duchies, Mongol horsemen burning Kraków to ash, and Teutonic Knights carving a state from lands that had once paid tribute to Gniezno. Yet through two centuries of fragmentation, the dream of a united Poland never died — until Łokietek gathered the pieces and placed the crown upon his head.